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Proposing Institution

Lehrstuhl für Aerodynamik, TU München
Project Manager

Dr.-Ing. habil Thomas Indinger
Boltzmannstr. 15
85748 Garching
Abstract
Increasing computational potential significantly changed the use of CFD simulation methods in the automotive industry. The increased computing power allows to investigate detailed and therefore complex models in CFD to improve the compliance with wind tunnel investigations. However, the motion of the vehicles wheels, especially the tread pattern and the internally ventilated braked disks are still often resembled with inaccurate methods and boundary conditions or are even neglected. Wind tunnel results show a big impact especially by the tire tread pattern. To accurately cover wheel rotation, methods have to be adjusted and new models have to be applied and validated. With these new methods at hand, optimization regarding drag reduction for cars can be performed more conveniently. This will lead towards more efficient vehicles (combustion or electric), therefore to less energy consumption and as a result to less pollution of the environment.Furthermore, due to better resources, researchers in the field of vehicle aerodynamics move away from very crude investigation geometries like the so called Ahmed Body or SAE Body to more realistic car shapes. This trend has been perceived by the Institute of Aerodynamics and Fluid Mechanics (AER) at Technische Universität München (TUM) and the highly anticipated DrivAer Model has been developed and published. Due to the large impact of the model and numerous publications on the topic the demand for an updated version containing underhood flow has emerged from the scientific community. The model has now been developed at the institute and CFD Simulations shall be conducted to test the influence of flow through the engine compartment. Within the proposed project especially the interaction between underhood flow and wheel/wheelhouse flow will be investigated.

Impressum, Conny Wendler