Coupled-SEA Application to Full Vehicle with Numerical Turbulent Model Excitation for Wind Noise Improvement

2021 ◽  
Author(s):  
Kai Aizawa ◽  
Masashi Komada ◽  
Hidenori Morita ◽  
Richard DeJong ◽  
Steve Sorenson
Keyword(s):  
Turbulent Model ◽  
Wind Noise ◽  
Full Vehicle

Turbulent model validations with CFD/wind tunnel test and application to SEA for wind noise prediction

2021 ◽  
Vol 263 (6) ◽  
pp. 175-186
Author(s):  
Kai Aizawa ◽  
Susumu Terakado ◽  
Masashi Komada ◽  
Hidenori Morita ◽  
Richard DeJong ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Numerical Approach ◽  
Turbulent Model ◽  
Wind Noise ◽  
Turbulent Spectrum ◽  
Turbulent Pressure ◽  
Turbulent Models ◽  
Input Response ◽  
Spectrum Model

Wind noise is becoming to have a higher priority in automotive industry. Several past studies investigated whether SEA can be utilized to predict wind noise by applying a turbulent spectrum model as the input. However, there are many kinds of turbulent models developed and the appropriate model for input to SEA is still unclear. Due to this, this paper focuses on clarifying an appropriate turbulent model for SEA simulation. First, the input turbulent pressure spectrum from five models are validated with wind tunnel tests and CFD. Next, a conventional numerical approach is used to validate models from the aspect of response accuracy. Finally, turbulent models are applied to an SEA model developed for a wind tunnel, and the SEA response is validated with test data. From those input/response validations, an appropriate turbulent model is investigated.

Using Spherical Beamforming to Evaluate Wind Noise Paths

2014 ◽  
Author(s):  
Mauricio Massarotti ◽  
Yuri Ribeiro ◽  
Márcio Calçada
Keyword(s):  
Wind Noise

Modelling and Validation of Full Vehicle Model based on a Novel Multibody Formulation

2019 ◽  
Author(s):  
Alberto Parra ◽  
Dionisio Cagigas ◽  
Asier Zubizarreta ◽  
Antonio Joaquin Rodriguez ◽  
Pablo Prieto
Keyword(s):  
Vehicle Model ◽  
Full Vehicle ◽  
Model Based

scholarly journals Numerical verification of the weak turbulent model for swell evolution

2008 ◽  
Vol 27 (4) ◽  
pp. 361-387 ◽  
Author(s):  
A.O. Korotkevich ◽  
A. Pushkarev ◽  
D. Resio ◽  
V.E. Zakharov
Keyword(s):  
Numerical Verification ◽  
Turbulent Model

Effect of the Separating Distance of Twin Buildings on the Generated Flow Structure

2010 ◽  
Vol 297-301 ◽  
pp. 924-929
Author(s):  
Inès Bhouri Baouab ◽  
Nejla Mahjoub Said ◽  
Hatem Mhiri ◽  
Georges Le Palec ◽  
Philippe Bournot
Keyword(s):  
Stokes Equations ◽  
Three Dimensional ◽  
Reynolds Stress Model ◽  
Navier Stokes ◽  
Wind Flow ◽  
Turbulent Model ◽  
Navier Stokes Equations ◽  
Twin Buildings ◽  
Volume Method ◽  
Numerical Examination

The present work consists in a numerical examination of the dispersion of pollutants discharged from a bent chimney and crossing twin similar cubic obstacles placed in the lee side of the source. The resulting flow is assumed to be steady, three-dimensional and turbulent. Its modelling is based upon the resolution of the Navier Stokes equations by means of the finite volume method together with the RSM (Reynolds Stress Model) turbulent model. This examination aims essentially at detailing the wind flow perturbations, the recirculation and turbulence generated by the presence of the twin cubic obstacles placed tandem at different spacing distances (gaps): W = 4 h, W = 2 h and W = 1 h where W is the distance separating both buildings.

Wind Noise Sound Quality

1995 ◽  
Author(s):  
Norman Otto ◽  
Ben John Feng
Keyword(s):  
Sound Quality ◽  
Wind Noise

Numerical Simulation of Muzzle Flow Field of Gun Based on CFD

2013 ◽  
Vol 291-294 ◽  
pp. 1981-1984
Author(s):  
Zhang Xia Guo ◽  
Yu Tian Pan ◽  
Yong Cun Wang ◽  
Hai Yan Zhang
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Stokes Equation ◽  
Wave Structure ◽  
Flow Fields ◽  
Single Equation ◽  
Navier Stokes ◽  
Turbulent Model ◽  
Navier Stokes Equation ◽  
Numerical Simulation Result

Gunpowder was released in an instant when the pill fly out of the shell during the firing, and then formed a complicated flow fields about the muzzle when the gas expanded sharply. Using the 2 d axisymmetric Navier-Stokes equation combined with single equation turbulent model to conduct the numerical simulation of the process of gunpowder gass evacuating out of the shell without muzzle regardless of the pill’s movement. The numerical simulation result was identical with the experimental. Then simulated the evacuating process of gunpowder gass of an artillery with muzzle brake. The result showed complicated wave structure of the flow fields with the muzzle brake and analysed the influence of muzzle brake to the gass flow field distribution.

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