Aerodynamics of speed skiers
Aerodynamics of speed skiers
复制标题
速度滑雪者的空气动力学
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
K. Knapp
中科院分区：
文献类型：
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作者：
B. Thompson;W. Friess;K. Knapp
当速度滑雪者在直道下坡终点通过计时门时，空气动力载荷占总阻力的80%以上。在亚音速风洞中对各种竞技速度滑雪者的气动阻力进行了测量，以量化当滑雪者处于竞技速度滑雪转弯位置时，位置，头盔，腿整流罩，滑雪杆和滑雪服特征的影响。结果表明，无论是前部区域还是身体周围的再循环区域，特别是腿部和臀部的下游尾流区域，阻力都显著减少。为了提高稳定性而设计的设备也被证明有助于在竞争中减少阻力的积分，因为最佳的折弯可以更容易地识别和维护。
Aerodynamic loads contribute more than 80% of the total drag on speed skiers when passing through timing gates at the end of the straight downhill course. Measurements of aerodynamic drag on a variety of competitive speed skiers obtained in a subsonic windtunnel, are presented here to quantify the influence of position, helmet, leg fairings, poles and ski-suit features when skiers are in competitive speed skiing tuck positions. Results show that drag is reduced significantly by reductions in either the frontal area or the size of recirculation regions around the body, particularly those in the downstream wake of the legs and buttocks. Equipment designed to improve stability is also shown to facilitate a decrease in the integral of drag over a competitive run because the optimal tuck can be more easily identified and maintained.