Publicado 6 números por año
ISSN Imprimir: 2152-5102
ISSN En Línea: 2152-5110
Indexed in
Automotive Flow and Acoustic Predictions using Large Eddy Simulations
SINOPSIS
The external flow field and the aeroacoustic generated by automotive appendices such as the A-pilar rain gutters and outside-rear-view mirrorrs are simulated using Large Eddy Simulation (LES). In the present study the simulations were carried out for three rain gutter geometries and two different mirror models. In these cases the simulation results were compared with the existing experimental data. For the flow around the gutters the agreement was found to be very good (for all three configurations) for the entire range of frequency measured. In addition, the present numerical simulations appear to be more accurate than previously published results obtained for the same geometries using RANS approach. Finally, the simulations of two outside rear view mirror configurations on a flat plate were completed. Calculations carried out on coarse and fine grids were compared to experimental data. In this case averaged pressure and velocity magnitude were compared again demonstrating the accuracy of the present approach.
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Moin, P., Advances in Large Eddy Simulation Methodology for Complex Flows.
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Wang, M., Moin, P., Computation of Quadrupole Noise using Acoustic Analogy.
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Wang, M. , Moin, P., Computation of Trailing-Edge Flow and Noise using Large-Eddy Simulation.
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Verzicco, R., Iaccarino, G., Fatica, M., Moin, P., and Khalighi, B., LES of Road Vehicle with Drag Reduction Devices.
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Mahesh, K., Constantinescu, G., and Moin, P., A Numerical Method for Large Eddy Simulation in Complex Geometries.
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Kumarasamy, S. and Karbon, K., Aeroacoustics of an Automobile A-Pillar Rain Gutter: Computational and Experimental Study.
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Khalighi, B., Johnson, J. P., Chen, K-H., and Lee, R. G., Experimental Characterization of the Unsteady Flow Field behind Two Outside-Rear-View Mirros.
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Lighthill, M. J., On Sound Generated Aerodynamically I: General Theory.
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Müller Stefan, Becker Stefan, Gabriel Christoph, Lerch Reinhard, Ullrich Frank, Flow-Induced Input of Sound to the Interior of a Simplified Car Model Depending on Various Setup Parameters, 19th AIAA/CEAS Aeroacoustics Conference, 2013. Crossref
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Müller Stefan, Becker Stefan, Gabriel Christoph, Lerch Reinhard, Ullrich Frank, Flow-Induced Airborne and Structure-Borne Noise at a Simplified Car Model, in New Results in Numerical and Experimental Fluid Mechanics IX, 124, 2014. Crossref