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Heat-fluid-solid coupling analysis of ultra‑high speed micro‑textured spiral groove dry gas seal
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Genghao LIU, Xuexing DING, Junhua DING
Fluid Machinery | 2025, 53(3) : 69 - 78
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Fluid Machinery | 2025, 53(3): 69-78
Heat-fluid-solid coupling analysis of ultra‑high speed micro‑textured spiral groove dry gas seal
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Genghao LIU, Xuexing DING, Junhua DING
Affiliations
  • School of Petroleum and Chemical Engineering，Lanzhou University of Technology，Lanzhou 730050，China
Published: 2025-03-30 doi: 10.3969/j.issn.1005-0329.2025.03.009
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This study investigates the influence of axial deformation on the sealing performance of ultra‑high speed dry gas seals under combined mechanical and thermal loads.A 3D geometric solid domain model and fluid domain model were established，incorporating complex effects such as real gas behavior and turbulence. The axial deformation patterns of the rotating and stationary rings，as well as their impact on sealing performance，were analyzed under extreme operating conditions （rotational speed n=40 000 r/min，inlet pressure Pi=8~14 MPa，inlet temperature Ti=373.15~493.15 K）. Results show that mechanical deformation under n=40 000 r/min，Pi=11 MPa，and Ti=3373.15 K yields the maximum leakage rate （MS-DGS，4.19 g/s），while thermal deformation produces the minimum leakage （MS-DGS，1.69 g/s）. The leakage rate under heat‑flow-solid coupled deformation falls between these extremes （MS-DGS，3.66 g/s）. Compared to conventional S-DGS，the MS-DGS exhibits reduced axial deformation and a 1.94% lower leakage rate. These findings provide critical insights for optimizing ultra‑high speed dry gas seal design.

dry gas seal  /  micro‑textured  /  ultra‑high speed  /  real gas effect  /  heat‑flow‑solid coupling  /  deformation
刘暅豪, 丁雪兴, 丁俊华. 超高速微织构螺旋槽干气密封热-流-固耦合分析. 流体机械, 2025 , 53 (3) : 69 -78 . DOI: 10.3969/j.issn.1005-0329.2025.03.009
Genghao LIU, Xuexing DING, Junhua DING. Heat-fluid-solid coupling analysis of ultra‑high speed micro‑textured spiral groove dry gas seal[J]. Fluid Machinery, 2025 , 53 (3) : 69 -78 . DOI: 10.3969/j.issn.1005-0329.2025.03.009
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Year 2025 volume 53 Issue 3
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Article Info
doi: 10.3969/j.issn.1005-0329.2025.03.009
  • Receive Date：2024-09-16
  • Online Date：2026-10-20
  • Published：2025-03-30
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  • Received：2024-09-16
  • Revised：2025-02-13
Affiliations
    School of Petroleum and Chemical Engineering，Lanzhou University of Technology，Lanzhou 730050，China
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https://castjournals.cast.org.cn/joweb/ltjx/EN/10.3969/j.issn.1005-0329.2025.03.009
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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