Flow control of double bypass variable cycle engine in modal transition  

作　　者：Haoying CHEN Changpeng CAI Jiayi LUO Haibo ZHANG 

机构地区：[1]Jiangsu Province Key Laboratory of Aerospace Power System,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出　　处：《Chinese Journal of Aeronautics》2022年第10期134-147,共14页中国航空学报（英文版）

基　　金：co-supported by the National Science and Technology Major Project, China (No. J2019-Ⅲ-0009-0053);the Advanced Jet Propulsion Creativity Center, China (No. HKCX2020020022)

摘　　要：To study the change mechanism and the control of the variable cycle engine in the process of modal transition,a variable cycle engine model based on component level characteristics is established.The two-dimensional CFD technology is used to simulate the influence of mode selection valve rotation on the engine flow field,which improves the accuracy of the model.Furthermore,the constant flow control plan is proposed in the modal transition process to reduce the engine installed drag.The constant flow control plan adopts the augmentation linear quadratic regulator control method.Simulation results indicate that the control method is able to effectively control the bypass ratio and demand flow of the variable cycle engine,and make the engine transform smoothly,which ensures the stable operation of the engine in modal transition and the constant demand flow of the engine.

关 键 词：Variable cycle engine Two-dimensional CFD technology Mode selection valve Flow control Modal transition 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程] V430