IMPLEMENTATION OF APPROXIMATE RIEMANN SOLVER TO TWO-PHASE FLOWS IN MORTAR SYSTEMS
This work presents a mathematical model for the twophase flows in the mortar systems and demonstrates the application of approximate Riemann solver on such model. The specific system considered in this work is a 120mm mortar, which contains an ignition cartridge that discharges hot gas-phase products and unburned granular propellants into the mortar tube through multiple vent-holes on the surface of tail boom. The model for the mortar system was coupled with the solution of the transient gas-dynamic behavior in the ignition cartridge. A high-resolution Godunov-type shock-capturing approach was used to simulate the formation of flow structure such as shock waves, contact discontinuities, and rarefaction waves. The numerical results were validated with experimental data. Based upon the close comparison between the calculated results and test data, it was found that the approximate Riemann solver is a suitable method for studying the two-phase combustion processes in mortar systems.
Ragini Acharya Kenneth K. Kuo
The Pennsylvania State University
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
16-20
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）