航空发动机露天试车台侧风模拟研究

Crosswind simulation of aero-engine outdoor test stand

基于流体力学理论,通过运用ANSYS Workbench对侧风装置试验过程进行仿真,深入研究了不同工况下侧风装置出口压力、流量和速度分布。结果表明:全部风机同时工作时每台风机供给流量的能力均衡,中央1台风机单独工作时供给效率最高。全部风机同时工作时气流稳定区在中心区和壁面之间,中央1台风机的工作速度和压力偏离中心。中间7台风机同时工作时气流相对稳定,但未工作风机会引起流量损失。本研究从理论上为侧风装置的使用及完善提供了指导和依据。

Based on the theory of hydrodynamics, the test process of cross wind device by using ANSYS Workbench was simulated, and pressure, flow and velocity distribution at the outlet of crosswind device under different working conditions were investigated. The results show that the supply capacity of each fan is balanced when all fans work at the same time, and the supply efficiency of central 1 fan is the highest when it works alone. When all fans work at the same time, the air flow stability area is located between the central area and the wall, and the working speed and pressure of central 1 fan deviate from the center. When the middle 7 fans work at the same time, the air flow is relatively stable, but the non-working fan will cause flow loss. This study provides guidance and basis for the use and improvement of crosswind device in theory.