基于动量交换的稳态总压畸变模拟方法研究  

Research of simulation method for inlet flow steady-state distortion based on momentum exchange

作　　者：张晓飞[1] ZHANG Xiaofei(Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院,西安710089

出　　处：《实验流体力学》2022年第4期77-83,共7页Journal of Experiments in Fluid Mechanics

摘　　要：为高效快速地模拟稳态总压畸变,基于气流动量交换机理开展了畸变生成方法研究。建立了流场稳态总压畸变控制模型,研制了该型畸变发生器技术验证机,搭建地面畸变模拟试验台,在地面演示验证生成了3个典型构型稳态总压畸变流场,模拟误差为2.7%~5.2%。试验研究表明:基于动量交换机理的空气喷流式畸变发生器直接面向流场构型生成期望的稳态总压畸变,能通过“软调节”控制主流区喷射流位置及大小,快速模拟任意流场畸变,成本低,具有工程使用价值。In order to simulate the steady-state total pressure distortion at the inlet of aeroengine, a new distortion generation method is studied and validated. After establishing the control model of steady state total pressure distortion generation in flow field, the distortion generator technical verification machine is developed, and the ground distortion simulation testbed is built. Using it, three typical flow fields in different configuration of steady state total pressure distortion have generated demonstratively, and the simulation error is between 2.7% to5.2%. The experimental results show that: The air jet distortion generator based on the airflow momentum exchange mechanism generates the expected steady-state total pressure distortion directly to flow field configuration, which can rapidly realize arbitrary flow field distortion by controlling the position and mass of the jet flow in the mainstream area by “soft adjustment”, and with low cost. It has obvious advantages and engineering practical value.

关 键 词：畸变模拟 动量交换 畸变发生器 流场构型 

分 类 号：V235.11[航空宇航科学与技术—航空宇航推进理论与工程]