Experimental and Numerical Investigation on Backpressure in Valueless Air-breathing Pulse Detonation Engine
Experimental and numerical studies were performed to improve the understanding of backpressure in valueless air-breathing pulse detonation engine (APDE). A two-phase APDE was used with gasoline as fuel and air as oxidizer. It was found in the experiments that the peak value of backpressure almost increased linearly with the operation frequency. The oscillation of the backpressure decreased with the increasing frequency. Numerical investigation on the backpressure was also performed. The numerical result was basically agreed with the experimental result which indicates that the numerical methods adopted in this paper were reasonable. The formation and propagation of the backpressure were analyzed. The effect of block ratio of venturis throat on backpressure was also numerical investigated. The result showed that a relatively minor block ratio of venturi has little effect on the backpressure for valueless APDE. The time interval that the inlet was exposed to the relatively high pressure disturbance decreased when the block ratio increased to 0. 6. The appropriate block ratio should be optimized through considering both flow resistance and backpressure.
detonation engine backpressure experimental numerical
PENG Chang-xin WANG Zhi-wu ZHENG Long-xi CHEN Xin-gu LU Jie
School of Power and Energy, Northwestern Polytechnical University, Xian, China
国际会议
4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)
西安
英文
376-381
2012-09-10（万方平台首次上网日期，不代表论文的发表时间）