Vibro-acoustics response of a simplified glass window excited by the turbulent wake of a quarter-spherocylinder body
Journal article, 2019

Inside vehicle cabins, an important part of interior noise is generated from cabin window vibration. The vibration is stimulated by surface pressure fluctuations that are produced by exterior flows and flow-induced noise. To numerically investigate the cabin noise, both exterior flows and noise must be resolved in simulations. This requirement motivates us to utilize advanced computational fluid dynamics (CFD) and computational aeroacoustics (CAA) based on a quarter-spherocylinder body, which is a general model for vehicle mirrors. The blunt body is mounted upstream of a rectangular window of a cuboid cavity. The turbulent flow is simulated using compressible large eddy simulation, compressible detached eddy simulation, and incompressible detached eddy simulation (I-DES). The exterior noise is either predicted by coupling the I-DES with an acoustic wave modeling method, or directly solved using compressible CFD methods. Given surface pressure fluctuations on the window from the CFD and CAA methods, the window vibration and interior noise are simulated with a finite element method. The effects of compressibility, turbulence modeling methods, and grid topology (polyhedral and trimmed elements) are discussed. The computational efficiency of the numerical methods is addressed. The contributions of hydrodynamic and acoustic pressure fluctuations to the interior noise are clarified.

flow-induced noise

transport

heavy-duty vehicles

CAA

cabin noise

aero-vibro-acoustics

turbulence modeling

CFD

Author

Huadong Yao

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Lars Davidson

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Journal of the Acoustical Society of America

0001-4966 (ISSN) 1520-8524 (eISSN)

Vol. 145 5 3163-3176

Psychoacoustics of Flow-Induced Cabin Noise

Chalmers, 2019-01-01 -- 2019-12-31.

Prediction of External Flow Acoustic Impact on In-cab Noise

VINNOVA, 2014-12-01 -- 2018-12-31.

Areas of Advance

Transport

Subject Categories

Aerospace Engineering

Transport Systems and Logistics

Fluid Mechanics and Acoustics

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1121/1.5109548

More information

Latest update

7/15/2019