摘要
为研究膏体推进剂供给管道受热后对推进剂的热稳定性及流动性能的影响,针对膏体推进剂在热管道内的流动情况,结合不可压缩N-S方程及幂律本构关系进行建模与仿真,获得膏体推进剂在热管道内的流动特性,分析了其流动时的受热状况。仿真结果表明:膏体推进剂在热管道内的流速比在普通(绝热)管道快,并且管径和入口速度越小,流速增大越明显;近壁面膏体推进剂加热层厚度随着流速的增大而减小,随管径的增大而增大。
To research the influence of the transport pipe heated by the high temperature in the combustor on the propellant＇ s thermal stability and flow properties, by combining incompressible N-S equation and power law constitute equation to model and simulate the pasty propellant flow in hot pipe, flow properties and heating conditions are obtained. Simulation results show that the flow velocity of pasty propellant in hot pipe is bigger than in normal （adiabatic） pipe. The less the caliber or the inlet velocity is, the more obvious the velocity augmentation is. The heating layer thickness of pasty propellants near wall surfaces increases with the augmentation of caliber and decreases with the increase of velocity.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第3期312-314,319,共4页
Journal of Nanjing University of Science and Technology
基金
国防基础科研项目
关键词
推进剂
膏体推进剂
管道
流动
传热
仿真
propellants
pasty propellants
pipes
flow
heat transfer
simulation
