Pressure Screen-StreamVane Interaction Effects on Downstream Flow Distortion Pattern

摘要

In order to better simulate combined pressure and swirl inlet distortions in turbofan engines, a Computational Fluid Dynamics (CFD) study was conducted to observe the effects of streamwise separation distance between a total pressure distortion screen and a StreamVane™ swirl distortion generator. A build up approach was utilized in the computational methodology. First, an isolated pressure distortion was modeled and compared to the experimental data; this served as validation for modeling the pressure screen as a porous domain. Next, an isolated StreamVane was modeled to serve as a baseline swirl distortion. Finally, a case study was conducted on the combined pressure screen ScreenVane™ configuration to determine the effects of streamwise separation distance on the generation and development of distortions downstream of the devices. The results of this study are intended to offer design guidance for future ScreenVane devices by determining the most suitable separation distance.