摘要
以探究迎风角对跳台滑雪运动员与滑雪板组成的多体系统的飞行气动性能的影响为目的,采用CFD数值模拟方法,在风速为29 m/s情况下,研究了多体系统迎风角为15°、20°、25°、30°、35°、40°六种情况下的气动性能变化情况。并在保证跳台滑雪运动员姿态以及飞行速度不变的情况下,以多体系统的升阻比作为衡量标准,对迎风角对多体系统气动性能的影响情况进行了评估。研究得出:多体系统升阻比随迎风角的增大呈递减趋势,且不同迎风角之间多体系统升阻比差异较大。在多体系统迎风角取为15°时,整个多体系统的升阻比取得最大值,有利于运动员取得良好的气动性能。此外,迎风角对跳台滑雪运动员气动性能影响的研究可为运动员比赛技巧相关的训练提供一定的指导作用。
In order to explore the influence of windward angle on the aerodynamic performance of ski jumpers,the CFD(computational fluid dynamics)numerical simulation method was used to study the aerodynamic performance changes of a multibody system under the condition of wind speed of 29 m/s in six situations:windward angle of 15°,20°,25°,30°35°40°.It is concluded that:under the condition of ensuring that the attitude and flight speed of ski jumpers are fixed,the lift-to-drag ratio of the entire multi-body system increases first and then decreases with the increase of the windward angle,and the lift-to-drag ratio of the entire multi-body system varies greatly between different wind attack angles.At an angle of attack of 15°,the aerodynamic performance of the entire multibody system is optimal,which can provide some kind of guidance for ski jumpers'training.
作者
王泽远
刘衎
柳方园
魏宏伟
刘庆宽
WANG Ze-yuan;LIU Kan;LIU Fang-yuan;WEI Hong-wei;LIU Qing-kuan(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province,Shijiazhuang 050043,China)
出处
《工程力学》
EI
CSCD
北大核心
2024年第S01期339-345,共7页
Engineering Mechanics
基金
国家自然科学基金项目(51778381)
河北省高端人才项目(冀办[2019]63号)
河北省自然科学基金项目(A2022210025)
石家庄铁道大学研究生创新资助项目(YC2023057)。
关键词
跳台滑雪
迎风角
升阻比
气动性能
计算流体力学
ski-jumping
wind attack angle
lift-to-drag ratio
aerodynamic performance
computational fluid dynamics
