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应用计算流体动力学软件FLUENT的大涡模拟方法,对带天窗简化Golf 1.6轿车内部流场及驾驶员左耳附近接收点处气动噪声进行了数值计算与分析.得到不同天窗形式下轿车内部驾驶员对称面上的速度矢量场、压力场分布情况以及接收点处声压级频域图.分析得出随着天窗后移及加宽,接收点处声压级逐渐减小,且综合考虑速度分布,工况1位置与尺寸较合理.
The large eddy simulation method of computational fluid dynamics software FLUENT was used to calculate and analyze the aerodynamic noise at the receiving point near the left ear of a skid-mounted Golf 1.6 car with a simplified skylight. The interior driver of the car with different skylights The velocity vector field and the pressure field distribution on the symmetry plane and the sound pressure level frequency domain at the receiving point are obtained.The sound pressure level at the receiving point gradually decreases with the rearward movement and widening of the skylight and the velocity distribution , Condition 1 position and size is more reasonable.