Thermodynamic Analysis of a High Temperature Flow Rate Control Valve for Ramjet Engines
A spool type high temperature control valve is developed to regulate the flow rate of high temperature fuel supply for ramjet engines automatically and accurately. As the high temperature working fluids passing through the valve may cause severe problems, for instance, the failure of the operating electromagnet of the valve or the damage of the crucial spool and sleeve friction pair inside the valve due to the thermal expansion of the valve materials, the aim of this paper is to predict the thermodynamic characteristics of the valve using 2D finite element analysis methods. After introducing the heat transfer and fluid dynamic models, as well as the boundary conditions for both of them, the flow field distribution inside the flow channel and the thermal field distribution inside the spool, sleeve and valve body are analyzed by solving the heat transfer and turbulent flow models inside both of the solid and fluid domains. The heat transfer models inside both of the solid and fluid domains are connected by the calculation of the heat flux through the fluid/solid interface. Simulation results are shown in the form of velocity field distributions and temperature field distributions. Suggestions on the construction design of the high temperature valve are given according to the thermodynamic analysis results.
finite element analysis flow rate control valve heat deformation ramjet engine thermodynamics
Songjing Li Zengwei Zang Yonghong Li Wen Bao
Department of Fluid Control and Automation, Harbin Institute of Technology, Harbin, 150001, China Energy Science and Engineering School, Harbin Institute of Technology, Harbin, 150001, China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）