## 双脉冲固体火箭发动机工作过程耦合传热数值仿真研究

Title    The Study on Numerical Simulation of DPM Working Process Coupling Heat Transfer
Abstract
In order to achieve solid rocket motor started several times, countries have proposed the concept of the pulse of the engine, the engine is the use of isolation means the solid rocket engine combustion chamber is pided into multiple parts, and multiple shutdown and star-up, and all rational allocation of thrust time interval between pulses. Double pulse motor is a pulse motor in one of the simplest structure.
This article focuses on the design of double-pulse engine, the first basic parameters of the double pulse of a predetermined engine according to the task index to determine its overall formal structure; the various parts of the structure after the engine has been designed. Then check the design, calculation of interior ballistic calculation of the whole shells characteristic parameter determined designed to meet mission requirements. Finally, double-pulse engine compartment coupled heat transfer process during the simulation to study the second pulse of the engine work, the flow field characteristics of the engine combustion chamber, the analysis showed a pulse combustion chamber temperature, convective heat transfer coefficient distribution for double-pulse engine designed to provide a reference.

Keywords  DPM  Structure Design  Zero-dimensional internal ballistic

１　引言    1
1.1 课题简介    1
1.2 双脉冲发动机国内研究现状    1
1.3 课题主要研究工作    3
2　双脉冲固体火箭发动机装药设计    5
2.1 推进剂型号与装药药型的选择    5
2.2 单孔管状药装药设计    7
2.3 装药的包覆    8
3　双脉冲固体火箭发动机的结构设计    10
3.1 燃烧室设计    10
3.2 喷管设计    16
3.3 装药支撑装置设计    20
3.4 点火装置设计    22
3.5 发动机隔层设计    23
3.6 双脉冲固体火箭发动机基本结构及参数    24
4　双脉冲发动机零维内弹道计算    25
4.1双脉冲发动机零维内弹道方程的建立    25
4.2 双脉冲发动机零维内弹道方程的求解    27
4.3 双脉冲发动机内弹道计算结果    28
5　双脉冲发动机工作过程隔层耦合传热数值仿真    30
5.1 数值模拟研究模型    30
5.2 数值计算结果    32

１　引言
1.1 课题简介 双脉冲固体火箭发动机工作过程耦合传热数值仿真研究:http://www.lwfree.cn/zidonghua/20181011/24006.html
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