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Comparison of Numerical Simulations with Experiments of Bluff Bodies Including Under-Hood Flow Technical Univ. of Munich
- Format:
- Conference/Event
- Author/Creator:
- Baeder, Baeder, author.
- Conference Name:
- SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2011
- Summary:
- Computational Fluid Dynamics (CFD) is state of the art in theaerodynamic development process of vehicles nowadays. Withincreasing computer power the numerical simulations includingmeshing and turbulence modeling are capturing the complex geometryof vehicles and the flow field behavior around and behind a bluffbody in more detail. The ultimate goal for realistic automotivesimulations is to model the under-hood as well.In this study vehicle simulations using the finite volume opensource CFD program OpenFOAM® are validated with own experiments ona modified generic quarter-scale SAE body with under-hood flow. Amodel radiator was included to take account of the pressure drop inthe under-hood compartment. Force and pressure measurements aroundthe car, total-pressure and hot-wire measurements in the car flowfield and surface flow patterns were simulated and compared withthe experiment. The simulations are performed using a virtual windtunnel which provides correct boundary-layer treatment andtest-section pressure gradient compared to the experiment.Different approaches of turbulence modeling were investigated, RANSand DDES simulations are performed and compared with each other andwith own experiments.For industrial usage of the computation process, a porous mediafor the model radiator was implemented and validated in OpenFOAM®.A process including meshing, solving and post-processing wasdeveloped and validated with experiments. The result is acompletely validated numerical process
- Notes:
- Vendor supplied data
- Publisher Number:
- 2011-01-0171
- Access Restriction:
- Restricted for use by site license
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