Deng Fei, Zhang Xiang-yan, Liu Ning. Simulation on the flow characteristics of multi-stage divergent combustion chamber of combustion light gas gun[J]. Explosion And Shock Waves, 2015, 35(3): 409-415. doi: 10.11883/1001-1455-(2015)03-0409-07
Citation:
Deng Fei, Zhang Xiang-yan, Liu Ning. Simulation on the flow characteristics of multi-stage divergent combustion chamber of combustion light gas gun[J]. Explosion And Shock Waves, 2015, 35(3): 409-415. doi: 10.11883/1001-1455-(2015)03-0409-07
Deng Fei, Zhang Xiang-yan, Liu Ning. Simulation on the flow characteristics of multi-stage divergent combustion chamber of combustion light gas gun[J]. Explosion And Shock Waves, 2015, 35(3): 409-415. doi: 10.11883/1001-1455-(2015)03-0409-07
Citation:
Deng Fei, Zhang Xiang-yan, Liu Ning. Simulation on the flow characteristics of multi-stage divergent combustion chamber of combustion light gas gun[J]. Explosion And Shock Waves, 2015, 35(3): 409-415. doi: 10.11883/1001-1455-(2015)03-0409-07
In order to analyze influences of multistage divergent chamber structure of combustion light gas gun on the combustion characteristics of hydrogen-oxygen mixed gas, the propellant combustion launching process in the multistage divergent chamber and standard cylinder chamber combustion light gas gun was simulated with the computational fluid dynamics method respectively.Comparative results show that the pressure fluctuations in the chamber of combustion light gas gun are significantly reduced by using the multistage divergent combustion chamber structure, while the stability of hydrogen-oxygen mixed gas combustion is improved.Recirculation zones would be formed in the multistage divergent chamber, which can reduce the flow axial velocity.The flame shape and the divergent chamber structure coincide with each other during its expanding.The surface of combustion zones develops steady.The multistage divergent combustion chamber structure has considerable impact on the flame expansion process and pressure fluctuations in the combustion chamber.
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