@article {Lee:2019:0736-2935:8086,
title = "Numerical study on the effect of transient wind conditions on the automotive aeroacoustic performance",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "2019",
volume = "259",
number = "1",
publication date ="2019-09-30T00:00:00",
pages = "8086-8093",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/2019/00000259/00000001/art00014",
author = "Lee, Jongwon and Cho, Munhwan and Ih, Kang Duck and Kim, Ji-Hoon and Song, Woo-Gil",
abstract = "Real driving conditions of an automotive vehicle can generate time-varying and spatial modulating aeroacoustic characteristics, which is different from the result obtained by the aeroacoustic wind tunnel test and numerical simulation process with the well-controlled inflow condition.
In this study, transient inflow toward a driving vehicle is focused on for exploring wind noise perturbation phenomena under actual atmospheric environments. The transient flow condition around a real driving vehicle is composed of random perturbations with turbulence intensities and lengths
scales. The incoming flow fluctuations is applied to simulate the vehicle aeroacoustics, effects of major transient parameters including perturbed direction, spatial scale, and oscillating frequencies are considered. The LBM based numerical study can figure out the transient wind condition
increases interior wind noise level in the high frequency range. Transient inflows strengthen major wind noise sources of A-pillar vortex and outside mirror rear wakes. Each effect can be analysed by comparing flow structures in the averaged domain and pressure fluctuation patterns in the
frequency domain.",
}