Ground clearance, rolling road, and scale effects on the wake of a bluff body: applications to pollutant dispersion in automotive engineering

本研究的目的是调查离地间隙的影响，在下游的简化汽车模型的流动拓扑结构。将研究不同的速度、比例模型（涵盖雷诺数高达300，000）和离地间隙。他们的影响后的艾哈迈德机构将从非侵入式（如LDA）和侵入式（如HWA和压力探头）测量技术获得的速度和湍流场进行分析。不同的后倾角也将进行实验研究。本研究还涉及使用ANSYS软件的计算。计算结果将与实验结果（从我们自己的测量或文献）进行比较。

The aim of this study is to investigate the ground clearance effects on the flow topology that is developed in the downstream of a simplified car model. Different velocities, scaled models (covering Reynolds numbers up to 300,000) and ground clearances will be studied. Their influence on the wake of the Ahmed body will be analysed from the velocity and turbulent fields obtained by non-intrusive (such as LDA) and intrusive (such as HWA and pressure probes) measurement techniques. Different rear slant angles will be also investigated experimentally. This study also involves computations using ANSYS software. The computational results will be compared with experimental results (from our own measurements or literature).