一种求解化学非平衡流动的新型解耦算法

刘瑜; 刘君; 唐玲艳; 崔小强

doi:10.6052/0459-1879-14-089

一种求解化学非平衡流动的新型解耦算法

doi: 10.6052/0459-1879-14-089

1.
装备学院航天装备系, 北京 101416
2. 大连理工大学航空航天学院, 大连 116024
3. 国防科学技术大学理学院, 长沙 410073
4. 中国人民解放军95972 部队2站, 兰州 735018

基金项目: 航空科学基金资助项目(2013463009).

详细信息

作者简介:
刘君,教授,主要研究方向:计算流体力学.E-mail: liujun65@dlut.edu.cn

中图分类号: V211.3
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- 被引次数: 0
出版历程
- 收稿日期: 2014-04-01
- 修回日期: 2014-06-24
- 刊出日期: 2015-01-18

A NOVEL UNCOUPLED ALGORITHM FOR SOLVING CHEMICAL NONEQUILIBRIUM FLOWS

1.
Department of Space Equipment, Academy of Equipment, Beijing 101416, China
2. School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, China
3. College of Science, National University of Defense Technology, Changsha 410073, China
4. Station No.2 of Group 95792, Lanzhou 735018, China

Funds: The project was supported by the Aeronautical Science Foundation of China (20131463009).

摘要

摘要: 在一种新型化学非平衡流解耦算法框架下,将WENO5M 格式用于化学非平衡流动的流场计算. 为了验证所发展算法的准确性,对多个典型算例进行了计算. 首先计算了Oran 的反射激波诱导爆轰实验,并考虑了不同化学反应机理和网格收敛性的影响,得到的计算结果与实验和其他文献给出的计算结果符合很好,并且由于采用了一种最近提出的氢氧燃烧机理,模拟得到的实验中各个事件发生的相对时间相比于与以前的计算结果与实验符合得更好. 然后计算了二维H₂/O₂/Ar 爆轰,计算得到的胞格结构与实验和其他模拟结果符合较好,并得到了详细的爆轰发展历程. 由于这种新型解耦算法的特点,仅需对现有的基于量热完全气体的可压缩流动计算程序做很小的修改,即能改造成化学反应流动计算程序,从而进一步体现了这种解耦算法的优势.
- 化学反应流 /
- 解耦算法 /
- 高阶格式
Abstract: The WENO5M scheme is modified to simulate the chemical reacting flow based on a novel uncoupled method for chemical nonequilibrium flow. For validating the new implementation, several benchmarks have been tested. The Oran's shock induced detonation experiment has been simulated first. The influences of different chemical reaction mechanisms and grid convergence have been considered and the results compare well with those from experiments. The second test case is the 2d H₂/O₂/Ar detonation, and the simulated cell structure compares well with the experiment results and other simulated results. Through these validations, we can conclude that the new implementation of WENO5M scheme for the simulation of chemical reacting flow based on the novel decoupled method is satisfied. Because the extension of original WENO5M scheme to calculate the chemical reacting flow based on the novel algorithm is straightforward and only minor modifications are needed, the advantages of this uncoupled algorithm is obvious.
- chemical reacting flow /
- uncoupled method /
- high-order scheme

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