膛口流场动力学过程数值研究

姜孝海; 范宝春; 李鸿志

膛口流场动力学过程数值研究

南京理工大学瞬态物理国家重点实验室, 南京 210094

基金项目: 瞬态物理国家重点实验基金资助项目

详细信息

作者简介:
姜孝海(1975- ),湖北阳新人,博士(联系人.Tel:+86-25-843103236;Fax:+86-25-84315644;E-mail:xhjiang@mail.njust.edu.cn).

中图分类号: TJ012.2
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出版历程
- 收稿日期: 2007-08-23
- 修回日期: 2008-01-17
- 刊出日期: 2008-03-15

Numerical Investigations on the Dynamic Process of the Muzzle Flow

National Key Laboratroy of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

摘要

摘要: 采用基于ALE方法的动网格及嵌入网格技术，运用有限体积方法，结合二阶精度Roe格式，对弹丸由高压气体驱动从静止状态加速至超音速，射出膛口到完全飞离初始流场的整个过程进行了数值模拟．根据数值结果，详细讨论了初始流场、火药燃气流场的形成与发展以及与弹丸的耦合和相互作用过程，揭示了在这一变化过程中激波与激波、激波与漩涡、激波与弹丸等的相互作用以及激波衍射、聚焦等对弹丸加速的影响．
- 空气动力学 /
- 数值模拟 /
- 膛口流场 /
- 动力学过程
Abstract: The integrative process of the quiescent projectile accelerated by high-pressure gas to shoot out at a supersonic speed and fly out of the range of precursor flow field was simulated numerically. The calculation method was based on ALE equations and second-order precision Roe method adopting chimera grids and dynamic mesh. From the predicted results, the coupling and interaction among the precursor flow field, propellant gas flow field and high-speed projectile were discussed in detail. And the shock-vortex interaction, shockwave reflection, shock-projectile interaction together with shock diffraction and shock focusing were demonstrated clearly to explain the effect on the acceleration of the projectile.
- gasdynamic /
- numerical simulation /
- muzzle flow /
- dynamic process

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参考文献(15)

[1]	Schmidt E, Shear D. Optical measurements of muzzle blast[J].AIAA J,1975,13(8):1086-1093. doi: 10.2514/3.60506
[2]	李鸿志,尤国钊.带膛口装置的膛口流场与冲击波形成机理[J].华东工程学院学报,1979,1(2):1-26.
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膛口流场动力学过程数值研究

作者简介:
姜孝海(1975- ),湖北阳新人,博士(联系人.Tel:+86-25-843103236;Fax:+86-25-84315644;E-mail:xhjiang@mail.njust.edu.cn).

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Numerical Investigations on the Dynamic Process of the Muzzle Flow

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膛口流场动力学过程数值研究

作者简介: 姜孝海(1975- ),湖北阳新人,博士(联系人.Tel:+86-25-843103236;Fax:+86-25-84315644;E-mail:xhjiang@mail.njust.edu.cn).

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出版历程

Numerical Investigations on the Dynamic Process of the Muzzle Flow

计量

出版历程

目录

作者简介:
姜孝海(1975- ),湖北阳新人,博士(联系人.Tel:+86-25-843103236;Fax:+86-25-84315644;E-mail:xhjiang@mail.njust.edu.cn).