某SUV车型进气系统改进设计

Modified Design of A SUV Air Intake System

针对某SUV车型进气背压过大的问题,采用Fluent软件对其进气系统进行建模,通过试验对该模型校准后进行流体力学仿真。同时,将计算流体力学模型的边界条件应用在Virtual.Lab中对进气系统的声学性能进行了预测,以系统背压和消声性能为目标对进气系统的结构进行了改进设计。对改进后的结构进行制样和评价,结果表明,进气背压和进气效率显著改善,进气系统的声学性能有所提高。

A SUV＇s intake backpressure is too large. To solve this problem, we use software Fluent for air intake system modeling, and calibrate this model through test for fluid mechanics simulation. At the same time, the boundary conditions of computational fluid dynamics model are applied in Virtual.Lab software to forecast the acoustic performance of the air intake system. The design of the air intake system＇ s structure is improved with system backpressure and noise elimination as target. Sample preparation of the modified structure is made and evaluated, the results show that the air intake backpressure and intake efficiency are improved significantly, and the acoustic performance of the intake system is improved.