Applied-information technology with different sub-grid models in large eddy simulation

摘要

Aiming at different sub-grid models of large eddy simulation, numerical simulation of aerodynamic noise caused by rearview mirror was conducted by the large eddy simulation. Compared with experimental data, the results of four sub-grid models on rearview mirror simulation have the difference respectively. Studies have shown that simulation result using the Dynamic Stress Smagorinsky-Lilly model is closest to the experimental data, and the other three models have larger error. Using the Dynamic Stress Smagorinsky-Lilly model in large eddy simulation for predicting aerodynamic noise of rearview mirror is effective and feasible, which can be used as reference for subsequent rearview mirror wind noise prediction.