A Comparative Aerodynamic Study of Commercial Bicycle Wheels using CFD
A Comparative Aerodynamic Study of Commercial Bicycle Wheels using CFD
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使用 CFD 对商用自行车车轮进行空气动力学比较研究
DOI：
10.2514/6.2010-1431
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Intelligent Light
中科院分区：
文献类型：
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作者：
M. Godo;David A. Corson;S. Legensky;Intelligent Light
采用CFD方法研究了几种商用自行车车轮在不同速度和横摆角下的性能。在这项工作中研究的车轮包括Rolf Sestriere，HED H3三辐，Zipp 404，808和1080深轮辋车轮和Zipp Sub9盘轮。车轮以20 mph和30 mph的速度建模，与地面接触，使用雷诺平均纳维斯托克斯（RANS）。阻力，垂直和侧（或提升）力报告每个车轮。还使用解析的侧向力计算了转弯力矩，以检查稳定性和机动性方面。在所研究的偏航角范围内的阻力和侧向力与风洞试验结果相比是有利的。先前报道的独特的过渡从向下到向上的垂直力作用在Zipp 404车轮上，以增加偏航角观察到所有深轮辋车轮和盘轮在这里研究。车轮也模拟在一个临界偏航角为10度，使用延迟分离涡模拟（DDES）检查流动的瞬态方面的移动自行车车轮。希望对这些结果的更全面理解将导致业余和专业自行车运动员和铁人三项运动员使用的自行车比赛车轮的性能，安全性和控制的改进。
A CFD methodology is used to study the performance of several commercial bicycle wheels over a range of speeds and yaw angles. The wheels studied in this work include the Rolf Sestriere, HED H3 TriSpoke, the Zipp 404, 808 and 1080 deep rim wheels and the Zipp Sub9 disc wheel. Wheels are modeled at speeds of 20mph and 30mph, in contact with the ground, using Reynolds-Averaged Navier Stokes (RANS). Drag, vertical and side (or lift) forces are reported for each wheel. Turning moments are also calculated using the resolved side forces to examine aspects of stability and maneuverability. Drag and side forces over the range of yaw angles studied compare favorably to experimental wind tunnel results. The previously reported unique transition from downward to upward acting vertical force on the Zipp 404 wheel for increasing yaw angles is observed for all deep rim wheels and the disc wheel studied here. Wheels were also modeled at a critical yaw angle of 10 degrees using Delayed Detached Eddy Simulation (DDES) to examine the transient aspects of flows around moving bicycle wheels. It is hoped that a more complete comprehension of these results will lead to improvements in performance, safety and control of bicycle racing wheels used by amateur and professional cyclists and triathletes.