Thermodynamic Characteristic Study of a High-temperature Flow-rate Control Valve for Fuel Supply of Scramjet Engines  

作　　者：ZENG Wen TONG Zhizhong LI Songjing LI Hongzhou ZHANG Liang 

机构地区：[1]Department of Fluid Control and Automation,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Chinese Journal of Aeronautics》2012年第4期559-565,共7页中国航空学报（英文版）

基　　金：National Defense Foundation

摘　　要：Thermodynamic characteristics are of great importance for the performance of a high-temperature flow-rate control valve,as high-temperature environment may bring problems,such as blocking of spool and increasing of leakage,to the valve.In this paper,a high-temperature flow-rate control valve,pilot-controlled by a pneumatic servo system is developed to control the fuel supply for scramjet engines.After introducing the construction and working principle,the thermodynamic mathematical models of the valve are built based on the heat transfer methods inside the valve.By using different boundary conditions,different methods of simulations are carried out and compared.The steady-state and transient temperature field distribution inside the valve body are predicted and temperatures at five interested points are measured.By comparing the simulation and experimental results,a reasonable 3D finite element analysis method is suggested to predict the thermodynamic characteristics of the high-temperature flow-rate control valve.

关 键 词：thermodynamic characteristics flow-rate control valve scramjet engines fuel supply 

分 类 号：TH137.522[机械工程—机械制造及自动化] V235.21[航空宇航科学与技术—航空宇航推进理论与工程]