Simulation of the autobody aerodynamics for car interior noise control

For the analysis of car interior noise at high speed, the influence of autobody aerodynamics should be taken into account, besides the vibration and acoustic radiation of powertrain, the random excitation from road and the vibration inputs of tires, and so on. A model of CFD was built. And the most turbulent area of autobody surfaces was located. The spectrum of average aerodynamic pressure of monitoring points on front door window was also obtained by unsteady calculation. So, the more accurate analysis of car interior noise can be processed due to loading the power inputs listed above to the simulation model, which is looked as the foundation of further optimization of car interior noise control.

[1]  Richard G. DeJong,et al.  Vehicle Wind Noise Analysis Using a SEA Model with Measured Source Levels , 2001 .

[2]  Adrian Gaylard,et al.  CFD Simulation of Side Glass Surface Noise Spectra for a Bluff SUV , 2006 .

[3]  Simone Sebben,et al.  Numerical Flow Simulations of a Detailed Car Underbody , 2001 .

[4]  Takahide Nouzawa,et al.  Evaluation of Wind Noise Sources Using Experimental and Computational Methods , 2006 .

[5]  Shigeru Ogawa.  Generation mechanism of aerodynamic noise around front pillar , 1995 .

[6]  Junya Ono,et al.  Development of Underbody Aerodynamic Simulation Using Automatically Generated Tetrahedral and Prismatic Cells , 2001 .

[7]  Kenji Okumura,et al.  Aerodynamic Noise Simulation based on Lattice Boltzmann Method( Surface Pressure Fluctuations around A-pillar ) , 1999 .

[8]  Ming Zhu,et al.  Recent Progress using SEA and CFD to Predict Interior Wind Noise , 2003 .

[9]  Minoru Kamata,et al.  SEA Model Building of Automotive Vehicle Body in White Using Experiment and FEM , 2003 .

[10]  W. Hucho,et al.  Aerodynamics of Road Vehicles , 1987 .

[11]  T Fukushima.  Development of a numerical analysis system for car aerodynamic noise , 1995 .

[12]  Firoz Alam,et al.  Simulation of Vehicle A-Pillar Aerodynamics using various Turbulence Models , 2004 .

[13]  Fu Li-min.  Numerical simulation of the crosswind effects on the aerodynamic performance of a sedan , 2006 .

[14]  Ye Li,et al.  Evaluation of Aerodynamic Noise Generated in Production Vehicle Using Experiment and Numerical Simulation , 2003 .

[15]  Albert R. George.  Automobile Aerodynamic Noise , 1990 .

[16]  Gusheng Hu,et al.  CFD Analysis in Research and Development of Racing Car , 2006 .

[17]  Fu Li-min.  Transient numerical simulation study of the effects of crosswind on the aerodynamic performance of a sedan , 2008 .

[18]  Masaru Watanabe,et al.  The Effect of Body Shapes on Wind Noise , 1978 .