爆破器材2017，Vol.46Issue(1)：24-28,33,6.DOI:10.3969/j.issn.1001-8352.2017.01.005
烟火式气体发生器燃烧过程的数值模拟和试验研究❋
Numerical Simulation and Experimental Study on the Combustion Process for a Pyrotechnic Airbag Inflator
刘伟 1陈樊 2石俊涛 1姚俊 2屈纯 1张宁2
作者信息
- 1. 航天科技集团公司四院四十二研究所 湖北襄阳，441003
- 2. 湖北省应急救生与安全防护重点实验室 湖北襄阳，441003
- 折叠
摘要
Abstract
A theoretical model was proposed to simulate the combustion process in a pyrotechnic airbag inflator. It was based on mass, energy conservation equations, ideal gas equation of state, geometry combustion law of propellant and flowrate law of small gas vent. Heat transfer between the gas and the walls of the combustion chamber and the filter was also considered. Internal pressure curves and tank pressure curves were obtained. Numerical simulation results were compared with experiments to ensure the accuracy of the model. Results show that higher burning rate causes shorter time to reach the maximum pressure and higher maximum pressure. Thinner gas generator results in higher rising rate of pressure, shorter time reaching the maximum pressure and higher maximum pressure. The lager gas generator charge mass results it reaches the maximum pressure more quickly and higher maximum pressure while the larger nozzle area results in the maximum pres-sure more slowly and lower maximum pressure. It can provide references to design and research of the pyrotechnic airbag inflators.关键词
烟火式/气体发生器/燃烧过程/数值计算Key words
pyrotechnic/airbag inflator/combustion processes/numerical simulation分类
军事科技引用本文复制引用
刘伟,陈樊,石俊涛,姚俊,屈纯,张宁..烟火式气体发生器燃烧过程的数值模拟和试验研究❋[J].爆破器材,2017,46(1):24-28,33,6.
