Article(id=1322559969669534350, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559901990240737, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1744560000000, receivedDateStr=2025-04-14, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793252468745, onlineDateStr=2026-10-29, pubDate=1774368000000, pubDateStr=2026-03-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793252468745, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793252468745, creator=13701087609, updateTime=1793252468745, updator=13701087609, issue=Issue{id=1322559901990240737, tenantId=1146029695717560320, journalId=1225396423026438145, year='2026', volume='46', issue='3', pageStart='1', pageEnd='330', issueExtLink='null', onlineDate='null', pubDate='1774368000000', pubDateStr='2026-03-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793252452609, creator='13701087609', updateTime=1793252731500, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322561071810991099, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559901990240737, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322561071810991100, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322559901990240737, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=221, endPage=230, ext={EN=ArticleExt(id=1322559969841500815, articleId=1322559969669534350, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Structural Optimization of the Oscillation Cavity in a Self-Oscillating Pulsed Jet Nozzle, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=

A self-oscillating pulsed jet nozzle can convert a continuous jet into a pulsed jet, which effectively enhances rock-breaking efficiency by inflicting periodic "water hammer" damage on the rock. As the core component for regulating jet morphology, the conventional linear structure of the nozzle oscillation cavity suffers from energy dissipation, thereby constraining jet performance. To address this, a study was conducted to investigate the influence of the cavity diameter ratio (the ratio of the oscillation cavity length L to the upper nozzle diameter d₁) on the pulsed jet performance within the external field, thereby identifying the optimal range for this ratio. From the perspective of flow field structure, the dynamic relationship between the internal low-velocity zone of the cavity and jet performance was analyzed, and Bezier curves were employed to optimize the wall profile of the oscillation cavity. Rock breaking and punching experiments using the self-oscillating pulsed jet nozzle were performed before and after the shape optimization of the oscillation cavity wall to comparatively verify the optimization effect of the oscillation cavity shape of the nozzle. The results indicate that when the cavity diameter ratio is between 5 and 6, the internal low-velocity zone of the oscillation cavity is minimized, yielding optimal jet performance in the external field. For the optimized nozzle, the average velocity and peak velocity of the external field exhibit increases of 16.99% and 16.74%, respectively. Furthermore, compared with the original nozzle, the diameter, depth, and volume of the punching holes generated by the pulsed jet impact on the rock are enlarged by 25.45%, 24.27%, and 18.32%, respectively. These findings demonstrate that the overall performance of the self-oscillating pulsed jet nozzle is effectively upgraded.

, authors=Ao WANG^{1, 2}, Xiaojing FENG^{1, 2}, Dong DUAN^{1, 2}, Weidong LU^{3, 4}, Yuanping GAN^{3, 4}, Luzhen MIAO^{3, 4}, authorsList=Ao WANG, Xiaojing FENG, Dong DUAN, Weidong LU, Yuanping GAN, Luzhen MIAO, authorCompany=null, correspAuthors=Xiaojing FENG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, 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=1322559970084770448, articleId=1322559969669534350, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=自激振荡脉冲射流喷嘴振荡腔结构优化研究, columnId=1226462295946085268, journalTitle=矿业研究与开发, columnName=矿山机电与矿业智能化, runingTitle=null, highlight=null, articleAbstract=

自激振荡脉冲射流喷嘴可将连续射流转化为脉冲射流形式，脉冲射流通过对岩石造成周期性的“水锤”破坏，可有效提高破岩效率。喷嘴振荡腔作为射流形态调控的核心部件，且现有直线型结构存在能量耗散问题，制约射流性能，开展了腔径比（振荡腔长度L/上喷嘴直径d₁）对喷嘴外流场脉冲射流性能的影响研究，优选出最佳腔径比范围。基于流场结构角度，分析腔室内低速区与射流性能的动态变换关系，利用贝塞尔曲线优化振荡腔壁面形状。开展振荡腔壁面形状优化前后喷嘴的自激振荡脉冲射流破岩冲孔试验研究，对比验证喷嘴振荡腔形状优化效果。结果表明，腔径比在5~6范围内时，振荡腔内部低速区域最小，外部流场射流性能最佳；优化后喷嘴外部流场平均速度增大了16.99%、峰值速度增大了16.74%，脉冲射流冲击岩石造成的冲孔直径较原喷嘴增大了25.45%、深度增大了24.27%、体积增大了18.32%，自激振荡脉冲射流喷嘴性能得到有效提升。

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王奥（2001—），男，山西运城人，硕士研究生，主要研究方向为高压水射流破岩。E-mail: 17200620244@163.com

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王奥（2001—），男，山西运城人，硕士研究生，主要研究方向为高压水射流破岩。E-mail: 17200620244@163.com

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