Application of the CE/SE Method to Magnetohydrodynamic Augmentation of Pulse Detonation Engines
The technology of magnetohydrodynamic(MHD)acceleration is focus of increasing attention due to its widely application prospect in aeronautics and astronautics.Thrust of pulse detonation engines can be increased by MHD augmentation.In the pulse detonation induced MHD ejector(PDIME)concept,overpressure at the exit of converging-diverging nozzle blocks flow in the bypass tube.With an upstream propagating,the seeded air stream in bypass tube is first shocked and raised to high-temperature to ionize thermally.The magnetic field energy then is added to accelerate the ionization gas from bypass tube,which thus augments the propulsive performance of PDE.In this paper,the model of gas-liquid two-phase detonation engine with bypass MHD ejector concepts was established,in which the engine was ignited by plasma jet.An appropriate approach of Conservation Element and Solution Element(CE/SE)was deduced for solving 2D plasma jet ignition and detonation process with MHD accelerator.The computational results show that the deduced CE/SE method can capture discontinuity effectually such as shock in the PDIME.It has been observed that thrust augmentation can be accomplished by the bypass accelerator under the given flight condition,and even then the bypass accelerator will activate only under a given velocity.Further analysis and optimization are required owing to some challenges associated with achieving performance gains.The results have certain significant reference for the experimental study in the future.
The CE/SE Method Pulse Detonation Engines MHD Augmentation Plasma Jet Ignition
Ling LIN Chunsheng WENG
National Key Laboratory of Transient Physics,Nanjing University of Science & Technology,Nanjing 210094,P.R.China
国际会议
The 5th International Conference on Mechanical Engineering and Mechanics(第五届国际机械工程与力学会议)
江苏扬州
英文
82-88
2014-08-21（万方平台首次上网日期，不代表论文的发表时间）