Interaction of Repetitive Laser Pulse with Mach 8 Bow Shock

摘要：

A computational study was performed to analyze the flow field of repetitive laser pulse before a Mach 8 bow shock. The interaction process of multiple blast waves and bow shock was analyzed. The influence of energy deposition frequency was studied. The results showed that, when the pulse frequency was lower than 25 kHz, the effects of each blast wave were almost isolated, and the pressure reduction was limited. When the pulse frequency reached 100 kHz, the superposed effects of blast waves were evident. A serial of wave transmission, reflection and amalgamation appeared behind the bow shock, and greatly changed the shape of bow shock. The timeaveraged pressure at the stagnation point was reduced to 72％ of the baseline, which was benefit for the wave drag reduction.

关键词： wave drag reduction pulsed energy deposition numerical simulation

作者: YU Xiao-jing YAN Hong

作者单位: School of Power and Energy,Northwestern Polytechnical University, Xian, China

会议类型: 国际会议

会议名称: 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)

会议地点: 西安

会议语种:英文

页码: 725-730

在线出版日期: 2012-09-10（万方平台首次上网日期，不代表论文的发表时间）