Wind Noise and Drag Optimization Test Method for Sail-Mounted Exterior Mirrors

Iacovoni, Donald P.; Zeuty, Edward J.; Morello, David A.

doi:10.4271/2003-01-1702

Cited by 7 publications

(1 citation statement)

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“…Experimental simulation measures the pressure fluctuation or noise value of a target area through road and wind tunnel tests or by capturing the structure of the flow field and analyzing the relationship between flow and aerodynamic noise [5,6]. Donald P. Iacovoni et al of Ford Motor Company [7] conducted experiments to optimize the use of cars' rearview mirrors in reducing aerodynamic noise. Experiments in the Lockheed low-speed noise of the side window is analyzed by separating vortex simulation and computational aeroacoustics.…”

Section: Introductionmentioning

confidence: 99%

Calculation of External Vehicle Aerodynamic Noise Based on LES Subgrid Model

Guo

Wang

et al. 2020

Energies

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A dynamic Smagorinsky–Lilly model (DSLM) subgrid model on the basis of the Smagorinsky–Lilly subgrid model (SLM) was introduced in the OpenFOAM software. The flow field of the vehicle was simulated, and the pressure coefficient and sound pressure curve of the monitoring points were compared with the wind tunnel test results. The results show that the DSLM subgrid model with a wall function can achieve high simulation accuracy. The investigation of the flow field structure revealed an intermittent detachment of the turbulent vortex after the airflow passed through the rearview mirror, thereby resulting in a violent pressure pulsation on the side window around the rearview mirror. Airflow passed through the A-pillar, separated, and reattached on the upper side window, thereby producing aerodynamic noise. The research results can serve as a good reference for the simulation and test of aerodynamic noises outside the vehicle, and for the reduction of the aerodynamic noises of vehicles.

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Section: Introductionmentioning

confidence: 99%