纳秒脉冲等离子体气动激励数值仿真

李凡玉; 李军; 吴云; 刘东健

doi:10.13224/j.cnki.jasp.2015.03.003

纳秒脉冲等离子体气动激励数值仿真

doi: 10.13224/j.cnki.jasp.2015.03.003

空军工程大学航空航天工程学院等离子体动力学重点实验室, 西安 710038

基金项目:

国家自然科学基金(51276197,51336011)

详细信息

作者简介:
李凡玉(1988-),男,山东济宁人,博士生,主要从事等离子体改善动力效能技术研究.

中图分类号: V211
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- 被引次数: 0
出版历程
- 收稿日期: 2013-11-06
- 刊出日期: 2015-03-28

Numerical simulation of nanosecond pulse plasma aerodynamic actuation

Science and Technology on Plasma Dynamics Laboratory, Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China

摘要

摘要: 从纳秒脉冲等离子体气动激励对流场的作用机理出发,将其对流场的作用等效为热源对流场的快速加热,建立了纳秒脉冲等离子体气动激励的空气动力学模型.应用模型计算了单次纳秒脉冲等离子体气动激励下静止流场的响应,计算结果表明:纳秒脉冲等离子体气动激励可在静止流场中形成一个高温升压升区(716K,225.95kPa)和一个低温升压升区(380K,131.7kPa),分别可诱导一强一弱两道压缩波,压缩波后各有一道稀疏波.压缩波与稀疏波同速向外传播,传播速度开始较大(大于400m/s),随着逐渐向外传播,其传播速度逐渐减小(357m/s).压缩波经过的区域可诱导局部速度,初期诱导的局部速度较大,在激励器切向和法向可诱导60m/s以上的局部速度,随着压缩波的衰减,诱导局部速度的能力减弱,最大可诱导10m/s左右的局部速度.
- 等离子体气动激励 /
- 纳秒脉冲 /
- 介质阻挡放电 /
- 冲击波 /
- 诱导局部速度
Abstract: A nanosecond pulse plasma aerodynamic actuation kinetic model was presented based on its effect on flow field mechanism. The effect of nanosecond pulse plasma aerodynamic actuation on flow field was represented by fast heating of thermal source. Simulative investigation of one nanosecond pulse was performed under static flow field conditions. The simulation results show that the temperature and pressure rise abruptly in the narrow space in static flow field by nanosecond pulse plasma aerodynamic actuation. One zone is high (716K, 225.95kPa) and the other one is relatively low (380K, 131.7kPa). They induce a strong compressional wave and a weak compressional wave following strong and weak rarefaction waves respectively. The compressional wave and rarefaction wave propagate to the far field at a high speed (above 400m/s) and then the speed reduces soon(357m/s). Local speed is induced when the compressional wave passes by. The maximum induced local speeds in the normal and tangential directions of actuator are above 60m/s at beginning and soon reduce to about 10m/s with the reduction of compressional wave.
- plasma aerodynamic actuation /
- nanosecond pulse /
- dielectric barrier discharge /
- shock wave /
- induced local velocity

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