风洞尺寸对高速列车气动性能的影响OA北大核心CSTPCD
Influence of wind tunnel size on aerodynamic performance of high-speed train
采用单因素变量法则,研究风洞尺寸对高速列车气动性能的影响.基于DDES湍流模拟方法采用不可压缩Navier-Stokes方程求解三维非定常流场,得到不同风洞尺寸下1꞉8缩比的高速列车气动性能,并通过与风洞试验结果的对比验证仿真结果的可靠性.研究结果表明:随着风洞尺寸的减小,风洞的阻塞比增大,列车周围气流加速效应更加明显,导致列车表面正负压强均增大,涡强度增加,所受气动阻力、升力增大,当风洞阻塞比从0.61%增加到4.17%时,列车气动阻力增加15…查看全部>>
The influence of wind tunnel dimensions on the aerodynamic performance of high-speed trains was investigated by single-factor variable method.The unsteady flow fields were analyzed by three-dimensional,incompressible Navier-Stokes equation based on the detached eddy simulation(DDES)method,and the aerodynamic performance of high-speed train at 1꞉8 scale model in different wind tunnel sizes was obtained.The reliability of the method was validated through compa…查看全部>>
张业;杜健;尚克明
中车青岛四方机车车辆股份有限公司,山东青岛,266111中车青岛四方机车车辆股份有限公司,山东青岛,266111中车青岛四方机车车辆股份有限公司,山东青岛,266111
交通运输
高速列车气动特性风洞尺寸分离涡方法(DES)
high speed trainaerodynamic performancewind tunnel sizedetached eddy simulation(DES)
《中南大学学报（自然科学版）》 2024 (5)
1880-1888,9
国家自然科学基金资助项目(52372369)(Project(52372369)supported by the National Natural Science Foundation of China)
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