喷流干扰气动热数值模拟的若干影响因素

林博希; 阎超; 李亚超

doi:10.13700/j.bh.1001-5965.2015.0379

喷流干扰气动热数值模拟的若干影响因素

doi: 10.13700/j.bh.1001-5965.2015.0379

北京航空航天大学航空科学与工程学院, 北京 100083

详细信息

作者简介:
林博希男,博士研究生。主要研究方向:计算流体力学。E-mail:boxilin@buaa.edu.cn;阎超男,博士,教授。主要研究方向:计算流体力学。Tel.:010-82317019 E-mail:yanchao@buaa.edu.cn;李亚超男,博士研究生。主要研究方向:计算流体力学。E-mail:yachaoli@foxmail.com

通讯作者:
阎超,Tel.:010-82317019 E-mail:yanchao@buaa.edu.cn

中图分类号: V221.3
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出版历程
- 收稿日期: 2015-06-09
- 网络出版日期: 2016-06-20

Some influence factors in aerodynamic heat transfer numerical simulation of jet-interaction flow

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 工程上对喷流气动热进行近似计算时,常常对真实的全化学反应流近似处理,这时需要了解喷流气体和喷管外形的近似方法对计算结果的影响规律。采用数值试验对比分析的方法,探讨了近似计算的2个影响因素:其一是使用量热完全的空气喷流近似燃气喷流进行数值模拟时,喷管几何形状对热流分布的影响;其二是使用空气喷流近似燃气喷流进行数值模拟的方法,分析不同的喷流热力学参数匹配方法对喷流形态及热流分布的影响。通过对不同方法进行对比计算,揭示了各个方法对喷流干扰气动热计算的影响规律,可以用于指导工程分析。
- 计算流体力学(CFD) /
- 喷流 /
- 相似准则 /
- 数值模拟 /
- 气动热
Abstract: When simulate the aerothermal environment of thrust jet and its interaction flow on an engineering vehicle geometry, people always use some approximate modeling to the full chemical reaction flow,then the influence to the simulation results of an approximate treatment for real gas and the modification to internal geometry of the thruster nozzle must to be manifested. By doing numerical test and compare results of some calculations, two main influence factors were studied to show the laws in approximate numerical simulation. One of which is how the possible modifications to thruster internal geometry influence on wall heat flux distribution of jet-interaction flow field. The second is when using a methodology of ideal gas equivalence to model fuel thruster jet, how different matching methods of the thruster exit boundary thermodynamic parameters influence the exhaust jet morphology and wall heat flux distribution. These computation results reveal the two main influence factors in aerodynamic heat transfer approximate simulation of thrust jet, and could be used to guide engineering applications.
- computational fluid dynamics (CFD) /
- jet flow /
- similarity criterion /
- numerical simulation /
- aerodynamic heat transfer

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参考文献(19)

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