Reducing tire noise has been a topic of increased focus in the recent years in industrial countries in order to decrease road traffic noise. Computational fluid dynamics (CFD) simulations conducted using ANSYS FLUENT are presented here to provide a better understanding of the small-scale noise generation mechanisms due to air-pumping at the tire-road interface. The CFD model employs a large eddy simulation (LES) turbulence modeling approach, where the filtered compressible Navier-Stokes equations are solved for simple groove geometries with a moving bottom wall that represents the deformation due to the tire movement along the road surface. A horizontally moving wall is used to represent the motion of the tire groove in and out of the contact patch while the deformation of the groove is prescribed. Temporal and spatially accurate pressure fluctuations are utilized to determine sound pressure levels and dominant frequencies. In addition to an understanding of noise generation mechanisms in such grooves, the CFD model developed here can potentially provide a series of control parameters that can help optimize the tire performance in terms of tire acoustics.
- Noise Control and Acoustics Division
Understanding Tire Acoustics Through Computational Fluid Dynamics (CFD) of Grooves With Deforming Walls
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Gautam, P, & Chandy, AJ. "Understanding Tire Acoustics Through Computational Fluid Dynamics (CFD) of Grooves With Deforming Walls." Proceedings of the ASME 2015 Noise Control and Acoustics Division Conference at InterNoise 2015. ASME 2015 Noise Control and Acoustics Division Conference. San Francisco, California, USA. August 9–12, 2015. V001T01A011. ASME. https://doi.org/10.1115/NCAD2015-5917
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