通过地面试车台总压畸变模拟器模拟高空畸变环境是评估进气畸变对发动机性能影响的重要途径。然而目前畸变模拟器存在稳、动态畸变指数难以调节问题，极大限制了畸变模拟范围。以国家军用标准推荐的弦月式插板为基础，考虑工程实践的可行性，探索性地提出轴向串联和周向多区组合畸变模拟器构型；采用“性价比” 高且对大分离流动预测更加准确的延迟分离涡模拟数值方法，在准确性验证的基础上，以稳、动态畸变指数以及两者的比值为描述畸变模拟器性能的重要参数，评估插板深度以及构型对畸变模拟器性能的调控能力，发现堵塞面积与动态畸变指数的关联关系并给出两者的关联函数，为提地面畸变试验中畸变指数的调节提供依据。

Simulating the in-flight distortion environment using the total pressure distortion simulator on the ground test platform is a critical way to evaluate the influence of intake distortion on engine performance. However, the range of the distortion coefficients generated by the distortion generator is significantly limited due to the difficulties in steady-state and dynamic distortion coefficient adjustment. Based on the single-baffle distortion generator recommended by the national military standard, and considering the feasibility of engineering practice, two configurations, tandem double-baffle and circumferential multi-baffle distortion generators, are proposed. The delayed detached eddy simulation (DDES) method is applied to predict the unsteady flow field of the distortion simulator owing to its advantages of large separation flow field prediction and low computational cost. Based on data verification, the three simulator configurations’ ability to adjust their performance with depth varying is assessed. The relationship between the blockage area and the dynamic distortion coefficient is found, and the correlation function between the two is given. The results provide a basis for distortion coefficient adjustment in the ground distortion test.