Refine Your Search

Search Results

Technical Paper

Spectral Density and Time Scales of Velocity Fluctuations in the Wake of a Simplified Car Model

2012-04-16
2012-01-0592
Although CFD is considered a well-established tool in the development of car aerodynamics it is obvious that there is still a strong demand on verification and validation of schemes and models involved in the numerical codes. This is reflected by the constantly high number of publications dealing with the matter. One of the test cases most often adopted for the purpose is the generic car model proposed by Ahmed et al. This is because of its geometrical simplicity and the realistic complex flow field which is reproducibly generated in its wake and makes it a selective test case. Another reason is the availability of comprehensive experimental data sets, amongst others the one we reported in an earlier paper. The velocity data covers the complete flow field around the model but focuses on the wake region. Besides mean values it provides turbulence quantities such as Reynolds stresses and other higher-order statistical moments measured using laser-doppler anemometry (LDA).
X