![Fig. 1: Wing Package on Race Car CFD Underbody Model-The bluff body with underbody tested was nearly identical to that of Cooper et al. [8]. It had a length of 396.2mm, a width of 212.3mm and a height of 165.1mm. The CFD grid model created was scaled 10 times larger to avoid floating point errors that occur when the Gambit mesh generation utility handles cell sizes under 1 x 10-5 (non-dimensional). Thus the wind tunnel used in all simulations was also modeled 10 times larger than reported in Cooper et al. [8]; as a rectangular tube of height 9.14m, width 9.14m and length 22.86m. Moving ground analysis was not incorporated into this investigation. Figure 2 illustrates key aspects of the model.](https://www.researchgate.net/profile/Albert-George/publication/294113723/figure/fig7/AS:668584892170248@1536414468206/Wing-Package-on-Race-Car-CFD-Underbody-Model-The-bluff-body-with-underbody-tested-was_Q320.jpg)
![Fig. 7: Rear Wing Package Validation Testing [1]](https://www.researchgate.net/profile/Albert-George/publication/294113723/figure/fig1/AS:598736614989825@1519761341045/Rear-Wing-Package-Validation-Testing-1_Q320.jpg)
![Fig. 17: Four-wheel Experimental Tests DESIGNING UNDERBODIES WITH WHEELS-The analysis of CFD and experimental tests in combination have provided a wealth of information on underbody flow, and have highlighted multiple flow phenomena. Some underlying conclusions are briefly presented below. These are developed more by various authors, who also offer suggestions to mitigate negative flow effects [2,3,9,10].](https://www.researchgate.net/profile/Albert-George/publication/294113723/figure/fig9/AS:668584892174344@1536414468330/Four-wheel-Experimental-Tests-DESIGNING-UNDERBODIES-WITH-WHEELS-The-analysis-of-CFD-and_Q320.jpg)
December 2008
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SAE Technical Papers
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... The model is composed of the nose of the car as well as the flaps and the endplates which make up the front wing. However, with the intention of conducting a more comprehensive study and understanding the aerodynamic effects that are generated by the rotation of the wheels [33][34][35], the work team decided to integrate the suspension and the wheels of the vehicle. ...
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December 2008
SAE Technical Papers