Article(id=1315732103053033564, tenantId=1146029695717560320, journalId=1315122079294652549, issueId=1315732078327616225, articleNumber=null, orderNo=null, doi=10.11883/bzycj-2025-0308, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1758556800000, receivedDateStr=2025-09-23, revisedDate=1774195200000, revisedDateStr=2026-03-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1791624578488, onlineDateStr=2026-10-10, pubDate=1788537600000, pubDateStr=2026-09-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791624578488, onlineIssueDateStr=2026-10-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791624578488, creator=13701087609, updateTime=1791624578488, updator=13701087609, issue=Issue{id=1315732078327616225, tenantId=1146029695717560320, journalId=1315122079294652549, year='2026', volume='46', issue='9', pageStart='091001-1', pageEnd='095402-10', issueExtLink='null', onlineDate='null', pubDate='1788537600000', pubDateStr='2026-09-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1791624572593, creator='13701087609', updateTime=1791624783658, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1315732963703247483, tenantId=1146029695717560320, journalId=1315122079294652549, issueId=1315732078327616225, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1315732963703247484, tenantId=1146029695717560320, journalId=1315122079294652549, issueId=1315732078327616225, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=094101-1, endPage=094101-16, ext={EN=ArticleExt(id=1315732103296303198, articleId=1315732103053033564, tenantId=1146029695717560320, journalId=1315122079294652549, language=EN, title=Coupling mechanism between jet and ground effect for a triangular three-nozzle rocket-sled and its layout effects, columnId=1315732103220805725, journalTitle=Explosion and Shock Waves, columnName=Experimental Techniques & Numerical Methods, runingTitle=null, highlight=null, articleAbstract=
To investigate the complex wake flow characteristics of multi-motor parallel rocket sleds, this study focuses on the mechanisms by which the nozzle horizontal spacing and the impingement height influence the flow structure and ground effect. A three-dimensional physical model was constructed for a dual-rail rocket sled system featuring three nozzles arranged in a triangular pyramid configuration. Four operating conditions were established, including large spacing (s=7d), small spacing (s=1d), low impingement height (h=2d), and high impingement height (h=5.5d). Here, s represents the horizontal center-to-center distance of the nozzles, h denotes the impact height, and d signifies the diameter of the nozzle outlet. The effects of nozzle center distance and impingement height on the flow field structure and ground effect were comparatively analyzed. Numerical simulations were performed using a computational fluid dynamics (CFD) method based on the Reynolds-Averaged Navier-Stokes equations, coupled with the Realizable k-ε turbulence model for transient solutions. The combustion chamber pressure-time curve derived from interior ballistic theory was applied to the nozzle inlet via a user-defined function (UDF). The sled velocity-time curve, determined from the exterior ballistic particle trajectory equation, was assigned as the far-field pressure boundary condition, enabling a coupled simulation framework of interior ballistics, exterior ballistics and flow field. The computational domain utilized a structured grid with refinement in the jet interaction region and near the ground to ensure calculation accuracy. The velocity and pressure fields obtained from numerical simulations were compared and validated against jet morphology, impingement height, and vortex core positions recorded by high-speed photography (2000 Hz). The flow field structure, pressure distribution, and thermal erosion behavior on the ground under different configurations are systematically revealed. The results indicate that the small-spacing nozzle arrangement triggers intense jet interference without ground effect participation, leading to a multi-peak and slow-recovery pressure evolution feature and substantially delays the flow field relaxation process. The coupling relationship between ground effect and jet interference is dominated by impingement height. At low impingement height conditions, the jet impinging on the ground induces intense reorganization and fragmentation of vortex structures, generating wall jets with velocities up to 960 m/s. Consequently, the peak ground surface temperatures reaches 1286.6 K with sustained high temperatures, which significantly elevates the risk of rail ablation. Conversely, a high impingement height effectively suppresses the ground effect, resulting in a more homogeneous and stable flow field structure. In this case, the peak ground temperature reduced by approximately 65% and maximum velocity reduced by 58%, significantly mitigating ablation risk. The initial phase (0-8 m) of the rocket sled is identified as the critical region subjected to the most severe thermomechanical loads. During this stage, the average acceleration reaches 832.7 m/s2, and the specific action time per unit distance is prolonged to 1.84 ms/m. Coupled with the transient complex flow field, this constitutes an extremely high risk for rail ablation. The numerical simulation results show excellent agreement with high-speed photographic experimental data regarding flow field morphology, impingement height, and vortex core positions, thereby validating the reliability of the established coupled model. This study elucidates the complex flow mechanisms of multi-nozzle parallel systems under strongly constrained conditions, and provids important theoretical foundations and design parameters for structural layout optimization and thermal protection design in high-acceleration, heavy-load rocket sled test systems.
, authors=Zhi QI
1, Guohua WANG
2, Xuean WU
2, Quanfu SUN
2, Baihang ZHOU
3, Hao WANG
1, Wenjun RUAN
1, authorsList=Zhi QI, Guohua WANG, Xuean WU, Quanfu SUN, Baihang ZHOU, Hao WANG, Wenjun RUAN, authorCompany=null, correspAuthors=Hao WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=Explosion and Shock Waves, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1315732110133018755, articleId=1315732103053033564, tenantId=1146029695717560320, journalId=1315122079294652549, language=CN, title=品字形三喷管火箭橇射流-地效耦合机理及其布局效应, columnId=1315732103585710175, journalTitle=爆炸与冲击, columnName=实验技术与数值方法, runingTitle=null, highlight=null, articleAbstract=
为研究多发动机并联火箭橇的复杂尾流场特性,重点分析了喷管水平中心距和冲击高度对流动结构和地面效应的作用机制。通过对比大间距(s=7d)、小间距(s=1d)、低冲击高度(h=2d)及高冲击高度(h=5.5d)4种工况(s为喷管水平中心距,h为冲击高度,d为喷管出口直径,d=275 mm),系统揭示了不同构型下流场的结构、压力分布与对地面的热冲刷行为。结果表明:小间距布局在无地效时会诱发强烈的射流干涉,导致压力恢复呈现“多波峰-慢恢复”特性,显著延缓了流场的弛豫过程。地面效应与干涉的耦合作用由冲击高度主导:低冲击高度工况下,射流冲击地面诱发涡结构剧烈重组与破碎,形成速度高达960 m/s的壁面射流,地表温度峰值达1286.6 K且持续高温,轨道烧蚀风险显著增大;而高冲击高度可有效抑制地效作用,流场结构更趋均匀稳定,地表温度峰值降低约65%,最大流速降低58%,烧蚀风险显著缓解。火箭橇起始段(0~8 m)为热-力载荷最恶劣区间,该阶段平均加速度高达832.7 m/s2且单位距离作用时间长为1.84 ms/m,与瞬态复杂流场耦合,构成了轨道烧蚀的极高风险。数值模拟结果与高速摄影试验结果在流场形态、冲击高度及涡核位置等方面高度吻合,验证了所建立的“内弹道-外弹道-流场”耦合模型的可靠性。
, authors=齐治
1, 王国华
2, 武学安
2, 孙全福
2, 周柏航
3, 王浩
1, 阮文俊
1, authorsList=齐治, 王国华, 武学安, 孙全福, 周柏航, 王浩, 阮文俊, authorCompany=null, correspAuthors=王浩, authorNote=
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, copyrightStatement=版权所有©《爆炸与冲击》编辑部 2026, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=RsNRbG8rXKd+45aLwUlhEQ==, magXml=YrZGFECCpPlIrmuQLzPiUg==, pdfUrl=null, pdf=oLFUvUk4GHOHeAwSIMF70Q==, pdfFileSize=7147877, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=DDm7Z8W4OtEP56h2Nc+STQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=D7D9PcHFXDjsuQSv+S/67w==, mapNumber=null, fund=null)}, authors=[Author(id=1315732110636335246, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=nbqi@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1315732110711832720, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732110636335246, language=EN, stringName=Zhi QI, firstName=Zhi, middleName=null, lastName=QI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315732110774747281, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732110636335246, language=CN, stringName=齐治, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1南京理工大学能源与动力工程学院,江苏 南京 210094, bio={"content":"
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1南京理工大学能源与动力工程学院,江苏 南京 210094)])]), Author(id=1315732110833467539, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1315732110925742229, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732110833467539, language=EN, stringName=Guohua WANG, firstName=Guohua, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2NORINCO Group Air Ammunition Research Institute Co., Ltd., Harbin 150010, Heilongjiang, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315732111001239702, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732110833467539, language=CN, stringName=王国华, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2中国兵器工业集团航空弹药研究院有限公司,黑龙江 哈尔滨 150010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1315732110426620039, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, xref=2, ext=[AuthorCompanyExt(id=1315732110435008648, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, companyId=1315732110426620039, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2中国兵器工业集团航空弹药研究院有限公司,黑龙江 哈尔滨 150010)])]), Author(id=1315732111055765656, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1315732111139651738, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111055765656, language=EN, stringName=Xuean WU, firstName=Xuean, middleName=null, lastName=WU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2NORINCO Group Air Ammunition Research Institute Co., Ltd., Harbin 150010, Heilongjiang, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315732111215149211, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111055765656, language=CN, stringName=武学安, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2中国兵器工业集团航空弹药研究院有限公司,黑龙江 哈尔滨 150010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1315732110426620039, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, xref=2, ext=[AuthorCompanyExt(id=1315732110435008648, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, companyId=1315732110426620039, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2NORINCO Group Air Ammunition Research Institute Co., Ltd., Harbin 150010, Heilongjiang, China), AuthorCompanyExt(id=1315732110447591561, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, companyId=1315732110426620039, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2中国兵器工业集团航空弹药研究院有限公司,黑龙江 哈尔滨 150010)])]), Author(id=1315732111278063773, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1315732111387115679, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111278063773, language=EN, stringName=Quanfu SUN, firstName=Quanfu, middleName=null, lastName=SUN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2NORINCO Group Air Ammunition Research Institute Co., Ltd., Harbin 150010, Heilongjiang, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315732111462613152, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111278063773, language=CN, stringName=孙全福, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=
2中国兵器工业集团航空弹药研究院有限公司,黑龙江 哈尔滨 150010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1315732110426620039, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, xref=2, ext=[AuthorCompanyExt(id=1315732110435008648, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, companyId=1315732110426620039, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2中国兵器工业集团航空弹药研究院有限公司,黑龙江 哈尔滨 150010)])]), Author(id=1315732111538110626, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1315732111617802404, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111538110626, language=EN, stringName=Baihang ZHOU, firstName=Baihang, middleName=null, lastName=ZHOU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315732111689105573, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111538110626, language=CN, stringName=周柏航, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3中国工程物理研究院流体物理研究所,四川 绵阳 621999, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1315732110552449162, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, xref=3, ext=[AuthorCompanyExt(id=1315732110560837771, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, companyId=1315732110552449162, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3中国工程物理研究院流体物理研究所,四川 绵阳 621999)])]), Author(id=1315732111764603047, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wanghao@njust.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1315732111865266345, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111764603047, language=EN, stringName=Hao WANG, firstName=Hao, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315732111949152426, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, authorId=1315732111764603047, language=CN, stringName=王浩, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China), AuthorCompanyExt(id=1315732110573420684, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, companyId=1315732110552449162, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3中国工程物理研究院流体物理研究所,四川 绵阳 621999)])], figs=[ArticleFig(id=1315732114608341178, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.1, caption=
Structure of the rocket sled car with three rocket motors, figureFileSmall=IxSG0MYqdmbbMr9BiZjadw==, figureFileBig=DDm7Z8W4OtEP56h2Nc+STQ==, tableContent=null), ArticleFig(id=1315732114683838651, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图1, caption=
安装3台火箭发动机的火箭橇橇车结构图, figureFileSmall=IxSG0MYqdmbbMr9BiZjadw==, figureFileBig=DDm7Z8W4OtEP56h2Nc+STQ==, tableContent=null), ArticleFig(id=1315732114914525372, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.2, caption=
Simplified diagram of test system layout, figureFileSmall=WGi4aGm9Ryee1ocPQBZvhA==, figureFileBig=8aZ/dUJt6crsLyzPuzWsnA==, tableContent=null), ArticleFig(id=1315732114990022845, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图2, caption=
火箭橇试验测试系统布置示意图, figureFileSmall=WGi4aGm9Ryee1ocPQBZvhA==, figureFileBig=8aZ/dUJt6crsLyzPuzWsnA==, tableContent=null), ArticleFig(id=1315732115090686142, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.3, caption=
High-speed camera images of jet flame evolution at different moments, figureFileSmall=rorduUGaha/XYFuonZG4ng==, figureFileBig=GSCrA//M8Ruk8RxjtY7wcQ==, tableContent=null), ArticleFig(id=1315732115166183615, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图3, caption=
火箭橇试验不同时刻高速摄像记录的射流火焰演化, figureFileSmall=rorduUGaha/XYFuonZG4ng==, figureFileBig=GSCrA//M8Ruk8RxjtY7wcQ==, tableContent=null), ArticleFig(id=1315732115224903872, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.4, caption=
Schematic diagram of the physical model for the three-nozzle rocket sled propulsion system, figureFileSmall=LcoGyHvd89dWE2MfNfT7Tw==, figureFileBig=8jkEaWzFOwyMSLNjbxbz3g==, tableContent=null), ArticleFig(id=1315732115321372865, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图4, caption=
三喷管火箭橇动力系统物理模型示意图, figureFileSmall=LcoGyHvd89dWE2MfNfT7Tw==, figureFileBig=8jkEaWzFOwyMSLNjbxbz3g==, tableContent=null), ArticleFig(id=1315732115401064642, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.5, caption=
Variation of axial velocity with travel distancefor case 3 under different grid densities (t=60 ms), figureFileSmall=Yd3nTglJVYPXNhvF1uuDIA==, figureFileBig=XcOBD/EbqNy0eYeAFKGJYA==, tableContent=null), ArticleFig(id=1315732115476562115, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图5, caption=
不同网格密度下工况3轴线速度随传播距离的变化(t=60 ms), figureFileSmall=Yd3nTglJVYPXNhvF1uuDIA==, figureFileBig=XcOBD/EbqNy0eYeAFKGJYA==, tableContent=null), ArticleFig(id=1315732115543670980, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.6, caption=
Grid diagrams for typical operating condition, figureFileSmall=h1o0/HguF3olzxTVM3JTkA==, figureFileBig=YeDMsjR58Qw4XqDR4fpiwg==, tableContent=null), ArticleFig(id=1315732115623362757, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图6, caption=
典型工况计算域网格示意图, figureFileSmall=h1o0/HguF3olzxTVM3JTkA==, figureFileBig=YeDMsjR58Qw4XqDR4fpiwg==, tableContent=null), ArticleFig(id=1315732115694665926, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.7, caption=
Pressure-time curve of rocket motor combustion chamber, figureFileSmall=hYrd+io3g6bI6CzYPZkb1w==, figureFileBig=uKEq6SUkdPzNRHXX+rtMrg==, tableContent=null), ArticleFig(id=1315732115774357703, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图7, caption=
火箭发动机燃烧室压力-时间曲线, figureFileSmall=hYrd+io3g6bI6CzYPZkb1w==, figureFileBig=uKEq6SUkdPzNRHXX+rtMrg==, tableContent=null), ArticleFig(id=1315732115858243784, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.8, caption=
Mach number-time curve of rocket sled operation, figureFileSmall=CH87Lyv3bZsQpt/08UkOIw==, figureFileBig=0nHxG5vznJr4TPt/1x9dhQ==, tableContent=null), ArticleFig(id=1315732115925352649, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图8, caption=
火箭橇橇车运行马赫数-时间曲线, figureFileSmall=CH87Lyv3bZsQpt/08UkOIw==, figureFileBig=0nHxG5vznJr4TPt/1x9dhQ==, tableContent=null), ArticleFig(id=1315732116005044426, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.9, caption=
Running speed-travel distance curves of rocket sled, figureFileSmall=IcUGZw99oFr1SrQbxbhIXg==, figureFileBig=UsdOiQfvMMGWEmZ3MzLPNw==, tableContent=null), ArticleFig(id=1315732116088930507, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图9, caption=
火箭橇橇车运行速度-行程曲线, figureFileSmall=IcUGZw99oFr1SrQbxbhIXg==, figureFileBig=UsdOiQfvMMGWEmZ3MzLPNw==, tableContent=null), ArticleFig(id=1315732116185399500, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.10, caption=
Velocity contour sequence of the 0.7 m cross section downstream of nozzle outlet, figureFileSmall=cYH39lWeXj5mjgiBkilgZA==, figureFileBig=XOVfyd6loGYl9Bq2TyQlmQ==, tableContent=null), ArticleFig(id=1315732116256702669, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图10, caption=
喷管出口下游0.7 m截面速度云图序列, figureFileSmall=cYH39lWeXj5mjgiBkilgZA==, figureFileBig=XOVfyd6loGYl9Bq2TyQlmQ==, tableContent=null), ArticleFig(id=1315732116332200142, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.11, caption=
Pressure contour sequence of the 0.7 m cross section downstream of nozzle outlet, figureFileSmall=iTdNuYZTgvDLjsn+HwWa8g==, figureFileBig=wgAt6EsjpyoM/bLvQFcSWg==, tableContent=null), ArticleFig(id=1315732116432863439, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图11, caption=
喷管出口下游0.7 m截面压力云图序列, figureFileSmall=iTdNuYZTgvDLjsn+HwWa8g==, figureFileBig=wgAt6EsjpyoM/bLvQFcSWg==, tableContent=null), ArticleFig(id=1315732116529332432, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.12, caption=
Axial pressure distributions of single nozzle at different moments, figureFileSmall=EejXsOP/9J52chkib+vNpQ==, figureFileBig=682FgmANNllrmZTLAoaagA==, tableContent=null), ArticleFig(id=1315732116604829905, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图12, caption=
不同时刻单喷管轴线压力分布, figureFileSmall=EejXsOP/9J52chkib+vNpQ==, figureFileBig=682FgmANNllrmZTLAoaagA==, tableContent=null), ArticleFig(id=1315732116680327378, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.13, caption=
Comparison of multi-physics time-series evolutions of three-nozzle jets at different impact heights, figureFileSmall=EpTsSZw1VQJaaXG+EtxAtA==, figureFileBig=pyntCQ9ccZO7WUvcZr80YA==, tableContent=null), ArticleFig(id=1315732116764213459, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图13, caption=
不同冲击高度下三喷管射流多物理场时序演化对比, figureFileSmall=EpTsSZw1VQJaaXG+EtxAtA==, figureFileBig=pyntCQ9ccZO7WUvcZr80YA==, tableContent=null), ArticleFig(id=1315732118395797716, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.14, caption=
Near-surface jet velocity contour, figureFileSmall=ZLDBVRAEBexIh/3oXEaCuw==, figureFileBig=g0RFsQatbOASeBDzpjwr1g==, tableContent=null), ArticleFig(id=1315732118538404053, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图14, caption=
近地面射流速度云图, figureFileSmall=ZLDBVRAEBexIh/3oXEaCuw==, figureFileBig=g0RFsQatbOASeBDzpjwr1g==, tableContent=null), ArticleFig(id=1315732118630678742, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.15, caption=
Variation of surface temperature with travel distance at the starting point, figureFileSmall=at1gLUtXeTkIHVRlwni7gA==, figureFileBig=B0wI0co2C/f/zgBZJXfK6Q==, tableContent=null), ArticleFig(id=1315732118769090775, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图15, caption=
起始点处地表温度随行程的变化, figureFileSmall=at1gLUtXeTkIHVRlwni7gA==, figureFileBig=B0wI0co2C/f/zgBZJXfK6Q==, tableContent=null), ArticleFig(id=1315732118886531288, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Fig.16, caption=
Comparison of jet flow field patterns between numerical simulation and high-speed experiment, figureFileSmall=B8j3yLK3Ps8QlHuPTsjm7w==, figureFileBig=uCQVbn9pD3oHJrS5oBibsg==, tableContent=null), ArticleFig(id=1315732118999777497, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=图16, caption=
数值模拟与试验高速摄影射流形态对比, figureFileSmall=B8j3yLK3Ps8QlHuPTsjm7w==, figureFileBig=uCQVbn9pD3oHJrS5oBibsg==, tableContent=null), ArticleFig(id=1315732119104635098, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Tab.1, caption=
Segment travel data for rocket sled vehicle
, figureFileSmall=null, figureFileBig=null, tableContent=
| 橇车行程/m | 时间/s | 区间初速度/(m·s−1) | 区间末速度/(m·s−1) | 平均加速度/(m·s−2) |
| 0~8 | 0.098 | 0.00 | 81.63 | 832.7 |
| >8~16 | 0.074 | 81.63 | 108.11 | 357.8 |
| >16~24 | 0.063 | 108.11 | 126.98 | 299.2 |
| ︙ | ︙ | ︙ | ︙ | ︙ |
| >112~120 | 0.033 | 246.15 | 250.00 | 116.7 |
), ArticleFig(id=1315732119226269915, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=表1, caption=
火箭橇橇车分段行程数据
, figureFileSmall=null, figureFileBig=null, tableContent=
| 橇车行程/m | 时间/s | 区间初速度/(m·s−1) | 区间末速度/(m·s−1) | 平均加速度/(m·s−2) |
| 0~8 | 0.098 | 0.00 | 81.63 | 832.7 |
| >8~16 | 0.074 | 81.63 | 108.11 | 357.8 |
| >16~24 | 0.063 | 108.11 | 126.98 | 299.2 |
| ︙ | ︙ | ︙ | ︙ | ︙ |
| >112~120 | 0.033 | 246.15 | 250.00 | 116.7 |
), ArticleFig(id=1315732119326933212, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Tab.2, caption=
Working condition parameters of numerical simulation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况编号 | 地面存在性 | s/d | h/d |
| 1 | 无 | 7 | − |
| 2 | 无 | 1 | − |
| 3 | 有 | 1 | 2 |
| 4 | 有 | 1 | 5.5 |
), ArticleFig(id=1315732119444373725, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=表2, caption=
数值模拟工况参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况编号 | 地面存在性 | s/d | h/d |
| 1 | 无 | 7 | − |
| 2 | 无 | 1 | − |
| 3 | 有 | 1 | 2 |
| 4 | 有 | 1 | 5.5 |
), ArticleFig(id=1315732119549231326, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Tab.3, caption=
Low-pressure zone area parameters for no-ground conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时刻/ms | 低压区面积/m2 |
| 工况1 | 工况2 |
| 2 | 4.65 | 1.53 |
| 10 | 0.233 | 0.300 |
| 60 | 0.463 | 0.325 |
), ArticleFig(id=1315732119654088927, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=表3, caption=
无地面工况低压区面积参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时刻/ms | 低压区面积/m2 |
| 工况1 | 工况2 |
| 2 | 4.65 | 1.53 |
| 10 | 0.233 | 0.300 |
| 60 | 0.463 | 0.325 |
), ArticleFig(id=1315732119779918048, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Tab.4, caption=
Axial momentum loss induced by jet interference
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | s/d | 时间/ms | $ \dot{J} $/kN | 相对损失/% |
| 1 | 7 | 2 | 483.8 | 0(基准) |
| 60 | 748.7 |
| 2 | 1 | 2 | 369.0 | −23.7 |
| 60 | 740.4 | −1.1 |
), ArticleFig(id=1315732119876387041, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=表4, caption=
射流干涉导致的轴向动量损失
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | s/d | 时间/ms | $ \dot{J} $/kN | 相对损失/% |
| 1 | 7 | 2 | 483.8 | 0(基准) |
| 60 | 748.7 |
| 2 | 1 | 2 | 369.0 | −23.7 |
| 60 | 740.4 | −1.1 |
), ArticleFig(id=1315732119947690210, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Tab.5, caption=
Vorticity values at the vortex core of the jet front under different working conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 时刻/ms | 上涡核涡量/s−1 | 下涡核涡量/s−1 | 涡量差值/s−1 | 地表涡涡量/s−1 |
| 1.5 | 5072 | 9360 | 4288 | − |
| 2 | 10 | 2047 | 2385 | 338 | − |
| 60 | 245 | 300 | 55 | − |
| 1.5 | 5083 | 9800 | 4717 | − |
| 3 | 10 | 2381 | N/A | 2381 | 2604 |
| 60 | 174 | N/A | 174 | 450 |
| 1.5 | 5061 | 9365 | 4304 | − |
| 4 | 10 | 2043 | 2400 | 357 | − |
| 60 | 382 | N/A | 382 | 665 |
), ArticleFig(id=1315732120002216163, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=表5, caption=
不同工况射流前锋涡核位置涡量值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | 时刻/ms | 上涡核涡量/s−1 | 下涡核涡量/s−1 | 涡量差值/s−1 | 地表涡涡量/s−1 |
| 1.5 | 5072 | 9360 | 4288 | − |
| 2 | 10 | 2047 | 2385 | 338 | − |
| 60 | 245 | 300 | 55 | − |
| 1.5 | 5083 | 9800 | 4717 | − |
| 3 | 10 | 2381 | N/A | 2381 | 2604 |
| 60 | 174 | N/A | 174 | 450 |
| 1.5 | 5061 | 9365 | 4304 | − |
| 4 | 10 | 2043 | 2400 | 357 | − |
| 60 | 382 | N/A | 382 | 665 |
), ArticleFig(id=1315732120069325028, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=EN, label=Tab.6, caption=
Comparison of near-ground momentum flux at different impact heights
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | h/d | 总动量通量/MN | 基准通量/MN | 耗散于地面动量/MN |
| 3 | 2.0 | 6.999 | 2.487 | 4.513 |
| 4 | 5.5 | 1.929 | 4.335 | 1.495 |
), ArticleFig(id=1315732120153211109, tenantId=1146029695717560320, journalId=1315122079294652549, articleId=1315732103053033564, language=CN, label=表6, caption=
不同冲击高度下近地面区域动量通量对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工况 | h/d | 总动量通量/MN | 基准通量/MN | 耗散于地面动量/MN |
| 3 | 2.0 | 6.999 | 2.487 | 4.513 |
| 4 | 5.5 | 1.929 | 4.335 | 1.495 |
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