Numerical Simulation of Internal Flow in Nitrous Oxide/Propane Coaxial Swirling Injector
To investigate the internal flow field characteristics of nitrous oxide/propane gas-liquid coaxial swirling injector, three-dimensional CFS (Computational Fluid Dynamics) model of injector was built, CFD software Fluent was used to perform the numerical simulation analysis for the internal flow field of swirling injector and annular injector. Three-dimensional compressible Reynolds time-averaged Navier-Stokes equations with k-ε turbulent model were utilized, and the Volume-of-Fluid method was used to simulate the swirling flow and capture the interface between gas(nitrous oxide) and liquid (propane). The predicted results show the gas-liquid two-phase flow field in swirling injector under different pressure drops and spout lengths, and the effects of pressure drop and spout length on mass flow rate, spray half-angle, film thickness and outlet velocity of swirling injector were studied; show the gas nitrous oxide flow field in annular injector under different pressure drops, and the effects of pressure drop on mass flow rate of annular injector were studied. All of the simulation results can be used as reference for new nitrous oxide/propane green bipropellant liquid engine research.
nitrous oxide propane swirling injector two phase flow numerical simulation
Wang Dong Liang Guozhu
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
1184-1187
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）