Analysis of Viscous Heating in a Micro-Rocket Flow and Performance

作     者：José A.Moríigo José Hermida Quesada 

作者机构：Dept.of Space ProgrammesNational Institute for Aerospace Technology Dept.of Aerodynamics and Propulsion National Institute for Aerospace Technology 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2008年第17卷第2期

页      面：116-124页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 082502[工学-航空宇航推进理论与工程] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0825[工学-航空宇航科学与技术] 0702[理学-物理学] 

基　　金：as part of the micropropulsion activities in the Small Satellites Programme funded by the Spanish Ministry of Defence 

主　　题：Micronozzles propulsion MEMS slip flow viscous heating 

摘      要：Micro-rockets for propulsion of small spacecrafts exhibit significant differences with regard to their macroscale counterparts,mainly caused by the role of the viscous dissipation and heat transfer processes in the micron-sized *** goal of this work is to simulate the transient operation of a micro-rocket to investigate the effects of viscous heating on the flow and performance for four configurations of the expanding gas and wafer *** modelling follows a multiphysics approach that solves the fluid and solid regions fully coupled.A contin- uum-based description that incorporates the effects of gas rarefaction through the micro-nozzle,viscous dissipa- tion and heat transfer at the solid-gas interface is ***-equilibrium is addressed with the implementa- tion of a 2nd-order slip-model for the velocity and temperature at the *** results stress that solid-fluid cou- pling exerts a strong influence on the flowfield and performance as well as the effect of the wafer during the first instants of the transient in micro-rockets made of low and high thermal conductivity materials.