NDLI: Understanding Tire Acoustics Through Computational Fluid Dynamics (CFD) of Grooves With Deforming Walls

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Understanding Tire Acoustics Through Computational Fluid Dynamics (CFD) of Grooves With Deforming Walls

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Gautam, Prashanta Abhilash, J. Chandy
Copyright Year	2015
Abstract	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.
Sponsorship	Noise Control and Acoustics Division
File Format	PDF
ISBN	9780791856819
DOI	10.1115/NCAD2015-5917
Volume Number	ASME 2015 Noise Control and Acoustics Division Conference
Conference Proceedings	ASME 2015 Noise Control and Acoustics Division Conference at InterNoise 2015
Language	English
Publisher Date	2015-08-09
Publisher Place	San Francisco, California, USA
Access Restriction	Subscribed
Subject Keyword	Turbulence Deformation Navier-stokes equations Computational fluid dynamics Roads Pavement Traffic Acoustics Modeling Pressure Sound pressure Noise (sound) Large eddy simulation Simulation Fluctuations (physics) Tires Engineering simulation
Content Type	Text
Resource Type	Article

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