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论文类型：期刊论文
发表时间：2022-06-30
发表刊物：固体火箭技术
所属单位：运载工程与力学学部
期号：3
页面范围：356-360
ISSN号：1006-2793
摘要：Attitude control micro solid rocket motor has wide application potential in the aerospace field. The gas-particle two-phase flow in the micro nozzle based on the MEMS technology was investigated. Firstly, through calculating the Knudsen number of the micro nozzle, the gas phase flow state in the micro nozzle was obtained. Then the gas-particle two-phase flow in the micro nozzle was simulated by using the method of CFD-DSMC. The influence of particle mass fraction and particle diameter on the gas phase flow was studied. The result shows that the continuum assumption in the micro nozzle is established under the conditions of the defined flow in the study. The exchange of momentum and energy between the gas phase and the particle can not noly reduce the gas phase Mach number and raise the temperature, but also increase the particle phase velocity and decrease the temperature. The particle phase mass fraction and particle diameter can significantly influence the Mach number and temperature of gas phase.
备注：新增回溯数据