Aero-Acoustic Predictions of Automotive Instrument Panel Ducts

Manera, Julien; Detandt, Yves; d'Udekem, Diego; Détry, Stéphane

doi:10.4271/2009-01-2237

Cited by 9 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study on intra-vehicle aeroacoustics could include the optimization of the heating, ventilation, and air conditioning (HVAC) of the car itself. Examples of studies on the optimization of the flow of air from the air conditioner, through the cabin and the dashboard spaces, can be the works of S. Détry and J. Manera [2], [3]. From their work, the procedure for acoustic noise measurement and validation of the experimentally obtained data with numerical results are described.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Aerodynamic and Acoustic Quantities Describing Flow around a Body Placed in a Wind Tunnel

Mahdal

Dobeš²,

Kozubková

2019

Measurement Science Review

View full text Add to dashboard Cite

Aerodynamically generated noise affects passenger comfort in cars, high-speed trains, and airplanes, and thus, automobile manufacturers aim for its reduction. Investigation methods of noise and vibration sources can be divided into two groups, i.e. experimental research and mathematical research. Recently, owing to the increase in computing power, research in aerodynamically generated noise (aero-acoustics) is beginning to use modern methods such as computational fluid dynamics or fluid-structure interaction. The mathematical model of turbulent flow is given by the system of partial differential equations, its solution is ambiguous and thus requires verification by physical experiment. The results of numerical methods are affected by the boundary conditions of high quality gained from the actual experiment. This article describes an application of complex measurement methodology in the aerodynamic and acoustic (vibro-acoustic) fields. The first part of the paper is focused on the specification of the experimental equipment, i.e. the wind tunnel, which was significantly upgraded in order to obtain the relevant aerodynamics and vibro-acoustics data. The paper presents specific results from the measurement of the aerodynamic and vibro-acoustic fields.

show abstract

Section: Introductionmentioning

confidence: 99%

Measurement of Aerodynamic and Acoustic Quantities Describing Flow around a Body Placed in a Wind Tunnel

Mahdal

Dobeš²,

Kozubková

2019

Measurement Science Review

View full text Add to dashboard Cite

show abstract

Simulation of HVAC flow noise sources with an exit vent as an example

Saarinen

Siikonen

2016

International Journal of Ventilation

View full text Add to dashboard Cite

Application Limits of Conservative Source Interpolation Methods Using a Low Mach Number Hybrid Aeroacoustic Workflow

Schoder

Wurzinger

Junger

et al. 2021

J. Theor. Comp. Acout.

View full text Add to dashboard Cite

In low Mach number aeroacoustics, the well-known disparity of scales allows applying hybrid simulation models using different meshes for flow and acoustics, which leads to a fast computational procedure. The hybrid workflow of the perturbed convective wave equation involves three steps: (1) perform unsteady incompressible flow computations on a subdomain; (2) compute the acoustic sources and (3) simulate the acoustic field, using a mesh specifically suited. These aeroacoustic methods seek for a robust, conservative and computational efficient mesh-to-mesh transformation of the aeroacoustic sources. In this paper, the accuracy and the application limitations of a cell-centroid-based conservative interpolation scheme is compared to the computationally advanced cut-volume cell approach in 2D and 3D. Based on a previously validated axial fan model where spurious artifacts have been visualized, the results are evaluated systematically using a grid convergence study. To conclude, the monotonic convergence of both conservative interpolation schemes is demonstrated. Regarding arbitrary mesh deformation (for example, the motion of the vocal folds in human phonation), the study reveals that the computationally simpler cell-centroid-based conservative interpolation can be the method of choice.

show abstract

Aero-Acoustic Predictions of Automotive Instrument Panel Ducts

Cited by 9 publications

References 7 publications

Measurement of Aerodynamic and Acoustic Quantities Describing Flow around a Body Placed in a Wind Tunnel

Measurement of Aerodynamic and Acoustic Quantities Describing Flow around a Body Placed in a Wind Tunnel

Simulation of HVAC flow noise sources with an exit vent as an example

Application Limits of Conservative Source Interpolation Methods Using a Low Mach Number Hybrid Aeroacoustic Workflow

Contact Info

Product

Resources

About