Role of on-board discharge in shock wave drag reduction and plasma cloaking

doi:10.1088/1009-1963/16/1/032

中国物理B ›› 2007, Vol. 16 ›› Issue (1): 186-192.doi: 10.1088/1009-1963/16/1/032

Role of on-board discharge in shock wave drag reduction and plasma cloaking

曾学军¹, 刘万东², 邱孝明³, 唐德礼³, 孙爱萍³

(1)China Aerodynamics Research and Development Center, Mianyang 621000,China; (2)Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; (3)Southwestern Institute of Physics, Chengdu 610041, China

收稿日期:2006-02-22 修回日期:2006-08-03 出版日期:2007-02-01 发布日期:2007-02-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos 40390150 and 10005001).

Role of on-board discharge in shock wave drag reduction and plasma cloaking

Qiu Xiao-Ming(邱孝明)^a)^†, Tang De-Li (唐德礼)^a), Sun Ai-Ping(孙爱萍)^a), Liu Wan-Dong(刘万东)^b), and Zeng Xue-Jun (曾学军)^c)

^a Southwestern Institute of Physics, Chengdu 610041, China; ^b Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; ^c China Aerodynamics Research and Development Center, Mianyang 621000, China

Received:2006-02-22 Revised:2006-08-03 Online:2007-02-01 Published:2007-02-01
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos 40390150 and 10005001).

摘要/Abstract

摘要： In the present paper, a physical model is proposed for reducing the problem of the drag reduction of an attached bow shock around the nose of a high-speed vehicle with on-board discharge, to the problem of a balance between the magnetic pressure and gas pressure of plane shock of a partially ionized gas consisting of the environmental gas around the nose of the vehicle and the on-board discharge-produced plasma. The relation between the shock strength and the discharge-induced magnetic pressure is studied by means of a set of one-fluid, hydromagnetic equations reformed for the present purpose, where the discharge-induced magnetic field consists of the electron current (produced by the discharge)-induced magnetic field and the partially ionized gas flow-induced one. A formula for the relation between the above parameters is derived. It shows that the discharge-induced magnetic pressure can minimize the shock strength, successfully explaining the two recent experimental observations on attached bow shock mitigation and elimination in a supersonic flow during on-board discharge [Phys. Plasmas 9 (2002) 721 and Phys. Plasmas 7 (2000) 1345]. In addition, the formula implies that the shock elimination leaves room for a layer of higher-density plasma rampart moving around the nose of the vehicle, being favourable to the plasma radar cloaking of the vehicle. The reason for it is expounded.

关键词: attached bow shock and magnetohydrodynamic (MHD) drag reduction, on-board discharges, plasma cloaking, MHD and fluid equation

Abstract: In the present paper, a physical model is proposed for reducing the problem of the drag reduction of an attached bow shock around the nose of a high-speed vehicle with on-board discharge, to the problem of a balance between the magnetic pressure and gas pressure of plane shock of a partially ionized gas consisting of the environmental gas around the nose of the vehicle and the on-board discharge-produced plasma. The relation between the shock strength and the discharge-induced magnetic pressure is studied by means of a set of one-fluid, hydromagnetic equations reformed for the present purpose, where the discharge-induced magnetic field consists of the electron current (produced by the discharge)-induced magnetic field and the partially ionized gas flow-induced one. A formula for the relation between the above parameters is derived. It shows that the discharge-induced magnetic pressure can minimize the shock strength, successfully explaining the two recent experimental observations on attached bow shock mitigation and elimination in a supersonic flow during on-board discharge [Phys. Plasmas 9 (2002) 721 and Phys. Plasmas 7 (2000) 1345]. In addition, the formula implies that the shock elimination leaves room for a layer of higher-density plasma rampart moving around the nose of the vehicle, being favourable to the plasma radar cloaking of the vehicle. The reason for it is expounded.

Key words: attached bow shock and magnetohydrodynamic (MHD) drag reduction, on-board discharges, plasma cloaking, MHD and fluid equation

中图分类号: (Shock waves and discontinuities)

52.35.Tc

47.40.Ki (Supersonic and hypersonic flows) 52.25.Fi (Transport properties) 52.30.-q (Plasma dynamics and flow) 52.65.Kj (Magnetohydrodynamic and fluid equation)

邱孝明, 唐德礼, 孙爱萍, 刘万东, 曾学军. Role of on-board discharge in shock wave drag reduction and plasma cloaking[J]. 中国物理B, 2007, 16(1): 186-192.

Qiu Xiao-Ming(邱孝明), Tang De-Li (唐德礼), Sun Ai-Ping(孙爱萍), Liu Wan-Dong(刘万东), and Zeng Xue-Jun (曾学军). Role of on-board discharge in shock wave drag reduction and plasma cloaking[J]. Chinese Physics, 2007, 16(1): 186-192.

[1]	袁大伟, 李玉同, 朱保君, 李彦霏, 仲佳勇, 魏会冈, 刘畅, 原晓霞, 张喆, 梁贵云, 王菲鹿, 李芳, 赵家瑞, 华能, 朱宝强, 朱健强, 江少恩, 杜凯, 丁永坤, 赵刚, 张杰. Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows[J]. 中国物理B, 2017, 26(5): 54206-054206.
[2]	李彦霏, 李玉同, 袁大伟, 李芳, 朱保君, 张喆, 仲佳勇, 韩波, 魏会冈, 裴晓星, 赵家瑞, 刘畅, 原晓霞, 廖国前, 鲁欣, 华能, 朱宝强, 朱健强, 方智恒, 黄秀光, 傅思祖, 赵刚, 张杰. Bow shocks formed by a high-speed laser-driven plasma cloud interacting with a cylinder obstacle[J]. 中国物理B, 2017, 26(5): 55202-055202.
[3]	Apul N Dev. Lower order three-dimensional Burgers equation having non-Maxwellian ions in dusty plasmas[J]. 中国物理B, 2017, 26(2): 25203-025203.
[4]	A N Dev, M K Deka, J Sarma, D Saikia, N C Adhikary. K—P—Burgers equation in negative ion-rich relativistic dusty plasma including the effect of kinematic viscosity[J]. 中国物理B, 2016, 25(10): 105202-105202.
[5]	袁大伟, 李玉同. Studies of collisionless shockwaves using high-power laser pulses in laboratories[J]. 中国物理B, 2015, 24(1): 15204-015204.
[6]	刘天航, 郝作强, 高勋, 刘泽昊, 林景全. Shadowgraph investigation of plasma shock wave evolution from Al target under 355-nm laser ablation[J]. , 2014, 23(8): 85203-085203.
[7]	王峰, 彭晓世, 刘慎业, 李永升, 蒋小华, 丁永坤. Shock wave velocity measurement in the Al₂O₃ under ultrahigh pressure[J]. 中国物理B, 2011, 20(6): 65202-065202.
[8]	张继彦, 杨家敏, 江少恩, 李永升, 杨国洪, 丁耀南, 黄翼翔, 胡昕. Experimental observation of ionization and shock fronts in foam targets driven by thermal radiation[J]. 中国物理B, 2010, 19(2): 25201-025201.
[9]	赵瑞, 梁忠诚, 韩冰, 张宏超, 徐荣青, 陆建, 倪晓武. Mechanism of laser-induced plasma shock wave evolution in air[J]. 中国物理B, 2009, 18(5): 1877-1883.
[10]	张翼, 李玉同, 郑志远, 刘峰, 仲佳勇, 林晓暄, 刘峰, 鲁欣, 张杰. Evolution of shock waves formed by laser-induced breakdown in air[J]. 中国物理B, 2007, 16(12): 3728-3731.
[11]	章玉珠, 王广安, 朱金荣, 沈中华, 倪晓武, 陆建. Influence of air pressure on mechanical effect of laser plasma shock wave[J]. 中国物理B, 2007, 16(9): 2752-2756.
[12]	王刚华, 胡熙静, 孙承纬. Simulation for double shell pinch[J]. 中国物理B, 2004, 13(12): 2105-2108.
[13]	谢柏松, 贺凯芬, 陈雁萍. DUST-ACOUSTIC SHOCK WAVES IN THE SHEATH OF DUSTY PLASMAS[J]. 中国物理B, 2000, 9(12): 922-926.
[14]	倪晓武, 邹彪, 陈建平, 卞保民, 沈中华, 陆建, 崔一平. ON THE GENERATION OF LASER-INDUCED PLASMA ACOUSTIC WAVES[J]. 中国物理B, 1998, 7(2): 143-147.

Role of on-board discharge in shock wave drag reduction and plasma cloaking

Role of on-board discharge in shock wave drag reduction and plasma cloaking

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 14

Metrics

本文评价

推荐阅读 0