Effect of Off-Body Laser Discharge on Drag Reduction of Hemisphere Cylinder in Supersonic Flow-Part II

Kianvashrad, Nadia ; Knight, Doyle ; Wilkinson, Stephen P ; Chou, Amanda ; Beeler, George B ; Janda, Moazzam

关键词: DRAG REDUCTION;    LASER OUTPUTS;    MACH NUMBER;    SHOCK HEATING;    SUPERSONIC FLOW;    BOW WAVES;    SHOCK WAVES;    SUPERSONIC SPEED;   

RP-ID  :  NF1676L-28965

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The interaction of on-axis and o -axis laser discharge in front of a hemisphere cylinder in Mach 2.0 ow is investigated numerically. Details of the physics of the interaction of the laser-induced shock and the heated region with the bow shock and its e ect on drag reduction are included. The energetic eciency of the laser discharge in reducing drag is calculated.