基于Euler-Lagrange模型的电弧风洞喷管两相流模拟

罗万清; 李海燕; 梁剑寒

doi:10.21656/1000-0887.400214

基于Euler-Lagrange模型的电弧风洞喷管两相流模拟

doi: 10.21656/1000-0887.400214

¹国防科技大学高超声速冲压发动机技术重点实验室, 长沙 410073;²中国空气动力研究与发展中心超高速空气动力研究所, 四川绵阳 621000

详细信息

作者简介:
罗万清（1985—），男，工程师，博士生(E-mail: wtsluo@163.com);梁剑寒（1972—），男，教授，博士生导师(通讯作者. E-mail: jhleon@vip.sina.com).

中图分类号: V211.3
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- 文章访问数: 1076
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出版历程
- 收稿日期: 2019-07-15
- 修回日期: 2019-08-05
- 刊出日期: 2020-01-01

Simulation of 2-Phase Flow in the Nozzle of the ArcHeated Wind Tunnel Based on the Eulerian-Lagrangian Model

¹Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, P.R.China; ²Hypervelocity Aerodynamics Institute, China Aerodynamics Research & Development Center, Mianyang, Sichuan 621000, P.R.China

摘要

摘要: 电弧风洞设备中试验气体采用电弧加热，电极烧蚀产生部分微小金属颗粒进入喷管内部进而形成气粒两相流，由此对喷管流场特性和试验段模型上热载荷等的影响值得关注.通过改进时间步长提高了颗粒跟踪算法的计算效率，并基于动量守恒和能量守恒定律耦合喷管内部气相和颗粒相的流动，采用EulerLagrange模型建立了一定简化条件下喷管内部气粒两相流动的数值模拟方法，并对典型算例进行了模拟分析.研究表明在相同的颗粒质量分数条件下，颗粒越小，喷管出口区域的流场越均匀.如果颗粒相质量分数较小，喷管出口位置两相流场和纯气相流场差异不明显.该研究工作为深入研究电弧风洞内部两相流场特性奠定了基础.
- 电弧风洞 /
- 气粒两相流 /
- EulerLagrange模型 /
- 数值模拟
Abstract: Due to the ablation of the electrode during the heating of test gas in the arc-heated wind tunnel, some tiny metal particles enter the nozzle to form gas-particle 2-phase flow, of which the effect is worthy of attention on the flow field in the nozzle and the heat load on the model of the test section. The computation efficiency of the particle tracking algorithm was improved through modification of the time step, with the gas-phase flow and the particle-phase flow coupled based on the conservation law of momentum and energy. By means of the Eulerian-Lagrangian model, a numerical simulation method for the gas-particle 2-phase flow inside the nozzle was established under specific simplification, and some typical examples were simulated and analyzed. The research shows that, under the same particle mass fraction, the smaller the particle size is, the more uniform the flow field downstream of the nozzle will be. If the mass fraction of the particle phase is small, it will has little effect on the flow field parameters of the nozzle outlet. This work lays a foundation for further study of the 2-phase flow field characteristics inside the arc-heated wind tunnel.
- arc-heated wind tunnel /
- gas-particle 2-phase flow /
- Eulerian-Lagrangian model /
- numerical simulation

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参考文献(21)

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基于Euler-Lagrange模型的电弧风洞喷管两相流模拟

doi: 10.21656/1000-0887.400214

作者简介:
罗万清（1985—），男，工程师，博士生(E-mail: wtsluo@163.com);梁剑寒（1972—），男，教授，博士生导师(通讯作者. E-mail: jhleon@vip.sina.com).

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Simulation of 2-Phase Flow in the Nozzle of the ArcHeated Wind Tunnel Based on the Eulerian-Lagrangian Model

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目录

留言板

基于Euler-Lagrange模型的电弧风洞喷管两相流模拟

doi: 10.21656/1000-0887.400214

作者简介: 罗万清（1985—），男，工程师，博士生(E-mail: wtsluo@163.com);梁剑寒（1972—），男，教授，博士生导师(通讯作者. E-mail: jhleon@vip.sina.com).

计量

出版历程

Simulation of 2-Phase Flow in the Nozzle of the ArcHeated Wind Tunnel Based on the Eulerian-Lagrangian Model

计量

出版历程

目录

作者简介:
罗万清（1985—），男，工程师，博士生(E-mail: wtsluo@163.com);梁剑寒（1972—），男，教授，博士生导师(通讯作者. E-mail: jhleon@vip.sina.com).