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首页> 外文会议>Vehicle aerodynamics, 2009 >Lessons Learned from a Full-Scale Real World Wind Noise Modeling Project
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Lessons Learned from a Full-Scale Real World Wind Noise Modeling Project

机译：全面的真实世界风噪声建模项目的经验教训

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摘要

Wind noise consistently ranks as one of the most influential factors with respect to perceived vehicle quality. In an effort to address this issue we investigated building, solving, and analyzing a CFD (Computational Fluid Dynamics) wind noise model using LES (Large Eddy Simulation) turbulence modeling. An experimental and numerical study of the effect of an actual sunroof deflector that was in place or removed from the vehicle was conducted. The combined effects of a relatively small mesh size and time step to capture the transient flow phenomena and a large number of time steps to insure valid comparisons with typical experimental results, led to extremely large solution times and a subsequent large amount of data to analyze. While good results were obtained, the practical use of this type of analysis in a development timeline was determined to be limited.
机译：风噪声一直被认为是对感知车辆质量影响最大的因素之一。为了解决这个问题，我们研究了使用LES（大涡模拟）湍流建模建立，求解和分析CFD（计算流体动力学）风噪声模型。对已安装或从车辆上拆下的实际天窗导流板的效果进行了实验和数值研究。相对较小的网格尺寸和较小的时间步长（用于捕获瞬态流动现象）和大量的时间步长（以确保与典型实验结果进行有效比较）的组合效果导致极大的求解时间，并随后需要分析大量数据。虽然获得了良好的结果，但是在开发时间表中这种类型的分析的实际使用受到限制。

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