Three-dimensional numerical analysis on combustion performance and flow of hybrid rocket motor with multi-segmented grain

作     者：Hui TIAN Yu DUAN Hao ZHU Hui TIAN;Yu DUAN;Hao ZHU

作者机构：School of AstronauticsBeihang UniversityBeijing 100083China Key Laboratory of Spacecraft Design Optimization&Dynamic Simulation TechnologiesMinistry of EducationBeihang UniversityBeijing 100083China 

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

年 卷 期：2020年第33卷第4期

页      面：1181-1191页

核心收录：

学科分类：080703[工学-动力机械及工程] 082502[工学-航空宇航推进理论与工程] 08[工学] 0807[工学-动力工程及工程热物理] 0825[工学-航空宇航科学与技术] 

主　　题：Combustion efficiency Hybrid rocket motor Multi-segmented grain Regression rate Rotation angle 

摘      要：This paper presents the combustion characteristics in hybrid rocket motors with multisegmented grain through three-dimensional numerical ***-segmented grain is composed of several thin grains with two or more *** numerical model consists of Navier-Stokes equations with turbulence,solid fuel pyrolysis,chemical reactions,a fluid–solid coupling model and a regression rate *** simulations adopt 90%Hydrogen Peroxide(HP)and PolyEthylene(PE)as the propellant *** effects of the rotation,port number,fuel grain segment number and mid-chamber length on the flow field and combustion performances are *** results indicate that the multi-segmented grain configuration can strengthen the flow field,and the regression rate and combustion efficiency are *** the cases with two grain segments and three ports for example,the regression rate is increased by 32.4%-45.1%and the combustion efficiency increases by 6%-8.6%in different rotation angles.