Analysis of the aerodynamic characteristics of the outflow field of an SUV under the effect of side wind

Abstract

Abstract A domestic SUV model was selected, and two different side wind simulation methods of “partial car” and “partial wind” were analyzed to numerically simulate the flow field of SUV under different intensity of side wind, and the velocity-pressure distribution and aerodynamic force of the flow field under different side wind intensity were obtained. coefficients under different side wind strengths. The wind tunnel test was conducted at the same time, and the simulation results were compared and analyzed with the test results. The analysis results show that: the results of the two simulation methods are close to each other, and the trend is the same as that of the test, which is that the aerodynamic drag, lateral force and lift force gradually increase with the increase of the side yaw angle; considering the operation and difficulty of model building, the side wind simulation method is recommended to “deflect the wind”; the pressure maps of different parts of the body are analyzed to qualitatively The pressure maps of different parts of the body are analyzed to qualitatively explain the effect of side wind on the aerodynamic characteristics of SUV, which provides a reference for further research on the aerodynamic characteristics of SUV under the influence of side wind.