复合固体推进剂湿扩散数值模拟研究

doi:10.16182/j.issn1004731x.joss.2018010037

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (1): 285-291.doi: 10.16182/j.issn1004731x.joss.2018010037

复合固体推进剂湿扩散数值模拟研究

王玉峰, 李高春, 张旭东, 曲凯, 李金飞

海军航空工程学院飞行器工程系, 山东烟台 264001

收稿日期:2015-11-17 发布日期:2019-01-02
作者简介:王玉峰(1978-), 男, 河南睢县, 博士, 讲师, 研究方向为固体发动机及推进剂应用; 李高春(1978-), 男, 浙江临海, 博士, 副教授, 研究方向为固体发动机及推进剂应用; 张旭东(1978-), 男, 山东文登, 博士, 讲师, 研究方向为固体发动机及推进剂应用。

Numerical Simulation of Moisture Diffusion of Composite Solid Propellant

Wang Yufeng, Li Gaochun, Zhang Xudong, Qu Kai, Li Jinfei

Department of Airborne Vehicle Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China

Received:2015-11-17 Published:2019-01-02

摘要/Abstract

摘要： 为考察湿度作用下复合固体推进剂内部水分扩散及分布情况,揭示推进剂湿度老化机理,进行了推进剂吸湿试验,提出了推进剂内部水分扩散模型及有限元模型,对推进剂内部水分扩散进行了有限元数值模拟,分析了影响推进剂内部水分扩散的因素。结果表明,采用湿度有限元方法能够模拟推进剂的吸湿过程;温度对水分扩散有一定的影响,温度越高,扩散系数越大,水分在推进剂中扩散越快;推进剂试件尺寸对水分扩散也有一定的影响,试件尺寸越大,内部水分扩散速度越小,到达平衡的时间越长。

关键词: 复合固体推进剂, 湿扩散, 有限元方法, 相对湿度, 水分分布

Abstract: In order to elucidate the humidity aging mechanism of composite solid propellant, the diffusion and the distribution of moisture inside the composite solid propellant under humidity was evaluated through the hygroscopic test of propellant. The mathematical and the FE model of moisture diffusion were proposed. The FEM was employed to simulate the moisture diffusion inside propellant. Moreover, the factors that affect the moisture diffusion were analyzed. The results showed that the humidity FEM can be used to simulate the hygroscopic process inside propellant. The temperature can affect the moisture diffusion. The higher the temperature is, the greater the coefficient and the diffusion speed of moisture are. Furthermore, the dimension of propellant specimen can also affect the moisture diffusion. That is, the diffusion speed of moisture becomes smaller with increasing the dimension of propellant specimen, and then the time to reach equilibrium becomes longer.

Key words: composite solid propellant, moisture diffusion, finite element method, relative humidity, moisture distribution

中图分类号:

V512

王玉峰, 李高春, 张旭东, 曲凯, 李金飞. 复合固体推进剂湿扩散数值模拟研究[J]. 系统仿真学报, 2018, 30(1): 285-291.

Wang Yufeng, Li Gaochun, Zhang Xudong, Qu Kai, Li Jinfei. Numerical Simulation of Moisture Diffusion of Composite Solid Propellant[J]. Journal of System Simulation, 2018, 30(1): 285-291.

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复合固体推进剂湿扩散数值模拟研究

Numerical Simulation of Moisture Diffusion of Composite Solid Propellant

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