• 国家社科基金自助期刊
  • 中国体育类核心期刊
  • 中国人文社会科学期刊AMI
  • 综合评价(A刊)权威期刊
  • 《中国社会科学引文索引》(CSSCI) 来源期刊
TANG Wei-di, SUO Xiang, YANG Chen-hao, CAO Feng-rui, WU Xie, LIU Yu. 2022: Computational Fluid Dynamics Simulation and Optimization of In-run Stage in Ski-Jumping. China Sport Science, 42(10): 62-70. DOI: 10.16469/j.css.202210008
Citation: TANG Wei-di, SUO Xiang, YANG Chen-hao, CAO Feng-rui, WU Xie, LIU Yu. 2022: Computational Fluid Dynamics Simulation and Optimization of In-run Stage in Ski-Jumping. China Sport Science, 42(10): 62-70. DOI: 10.16469/j.css.202210008

Computational Fluid Dynamics Simulation and Optimization of In-run Stage in Ski-Jumping

More Information
  • Received Date: May 18, 2022
  • Objective: Computational fluid dynamics analyses were conducted to determine the factors that influence the in-run phase of ski jumping. The purpose of this study is to determine the factors that influence the speed of taking off, so as to help athletes to optimize their posture and reduce the air resistance in the in-run phase, so that they can achieve higher take-off speeds under the same conditions of start gate, providing targeted theoretical support for training and competition. Methods: Based on the physical data of male ski-jumping athletes, a highly targeted digital twin model was established, then the model was used to do the computational fluid dynamics analysis, so as to provide an optimal posture and angle range. The athletes maintaining a relatively stable action in the in-run stage with the optimal position to obtain a higher starting speed and jumping height under the same conditions. Results: Within a certain range, the lower of distance of the torso from the ground, the higher lift force was obtained by the athletes during the in-run stage. In addition, position with the maximum lift-to-drag ratio does not achieve the maximum in-run and take-off speed. Conclusions: The main reason for the higher take-off speed achieved by adjusting the in-run posture is the reduction in air resistance and the order of magnitude difference in the amount of lift applied to the system compared to the amount of gravity. Therefore, the primary objective of optimizing the athlete's posture during the in-run phase should be to reduce the air resistance as opposed to increasing the air lift. In practice this should be achieved by adjusting the torso and body posture to adjust the in-run posture, optimizing the aerodynamic performance of the multi-body system consisting of the athlete and the equipment during the in-run phase, and achieving drag reduction to achieve better performance.
  • 胡齐,刘宇,2020a.环境风对跳台滑雪空中飞行气动特性的影响[J].体育科学,40(3):54-63.
    胡齐,刘宇,2020b.姿态不对称对跳台滑雪飞行阶段气动特性的影响[J].体育科学,40(10):41-49.
    胡齐,张文毅,陈骐,2018.跳台滑雪空气动力学研究进展[J].中国体育科技,54(5):132-139.
    伍勰,曲毅,刘思平,等,2021.跳台滑雪技术生物力学智能分析与反馈系统的研发与应用[J].中国体育科技,57(12):3-8.
    ABRAHAMSON J,2021.Fluent Theory Guide[M].Pittsburgh,PA:ANSYS:1068.
    BLOCKEN B,VAN DRUENEN T,TOPARLAR Y,et al.,2019.CFD analysis of an exceptional cyclist sprint position[J].Sports Engineering,doi: 10.1007/s12283-019-0304-7.
    CAO L Z,GUO Y C,LI X,et al.,2022.Optimization of ski attitude for the in-flight aerodynamic performance of ski jumping[J].Biology,doi: 10.3390/biology11091362.
    CHIPONGO K,KHIADANI M,LARI K S,2020.Comparison and verification of turbulence Reynolds-averaged Navier-Stokes clo-sures to model spatially varied flows[J].Sci Rep,doi: 10.1038/s41598-020-76128-9.
    ELFMARK O,ETTEMA G,2021.Aerodynamic investigation of the inrun position in Ski jumping[J].Sports Biomech,doi: 10.1080/14763141.2020.1871503.
    GARDAN N,SCHNEIDER A,POLIDORI G,et al.,2017.Numerical investigation of the early flight phase in ski-jumping[J].J Bio-mech,59:29-34.
    ROZHDESTVENSKY K V,2006.Wing-in-ground effect vehicles[J].Prog Aerosp Sci,42(3):211-283.
    SCHWAMEDER H,2008.Biomechanics research in ski jumping,1991-2006[J].Sports Biomech 7(1):114-136.
    VIRMAVIRTA M,2016.Aerodynamics of ski jumping[M]//The En-gineering Approach to Winter Sports.New York:Springer New York:153-181.
    VIRMAVIRTA M,2017.Ski jumping:Aerodynamics and kinematics of take-off and flight[M]//Handbook of Human Motion.Cham:Springer International Publishing:1-21.
    VIRMAVIRTA M,ISOLEHTO J,KOMI P,et al.,2009.Take-off analysis of the Olympic ski jumping competition (HS-106 m)[J].JBiomech,42(8):1095-1101.
    WILCOX D C,2008.Formulation of the k-ωturbulence model revisited[J].AIAA J,46(11):2823-2838.
  • Related Articles

  • Cited by

    Periodical cited type(2)

    1. 丁博,张爱新,韩雅洁,王茂叶. 不同运动方式干预对昼夜节律紊乱小鼠认知功能的影响——基于肠道菌群和非靶向代谢组学分析. 上海体育大学学报. 2024(03): 49-64 .
    2. 白茜. 以体育人视角下青少年体育运动习惯养成策略研究. 南京体育学院学报. 2023(07): 69-73 .

    Other cited types(1)

Catalog

    Article views (8) PDF downloads (1) Cited by(3)

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return