Flow field control for 2-meter high-speed free-jet wind tunnel

作     者：Jiayi TIAN Zhongwei LING Weijie LIU Jianhua Qin Neng XIONG Jiayi TIAN;Zhongwei LING;Weijie LIU;Jianhua Qin;Neng XIONG

作者机构：China Aerodynamics Research and Development CenterMianyang 621000China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第10期

页      面：77-89页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Continuously varying Mach number Wind tunnel Flow field control Neural network Static pressure matching Feedforward control 

摘      要：The 2-meter High-speed Free-jet Wind Tunnel(2 m HFWT)is China’s first large-scale open-jet trisonic wind *** to traditional closed high-speed wind tunnels,this wind tunnel is endowed with remarkable advantages of ample test chamber space,less interference from the tunnel wall,flexible model support mode,and adjustable continuous variation of the Mach ***,its unique structure makes traditional wind tunnel control methods difficult to apply and brings significant challenges to wind tunnel flow field *** this paper,a flow field control system is designed for the 2 m HFWT by comprehensively using advanced control technologies such as neural network,gain scheduling,feedforward control,and adaptive *** practical application tests,it is proved that the proposed control system successfully solves the problem of high-precision flow field control under continual depletion of storage tank pressure,and realizes distinctive functions of adaptive static pressure matching and continuously varying Mach number at supersonic *** addition,due to the application of workflow technology,the flow field control system can flexibly adapt to the implementation of tests of different types and operation conditions,thus fully satisfying the needs of conducting various conventional and special tests in the 2 m HFWT.