Computational Models Based on Analysis of Three Dimensional Flow Field Structures in Rotating Detonation

doi:10.13675/j.cnki.tjjs.190536

Journal of Propulsion Technology ›› 2020, Vol. 41 ›› Issue (12): 2757-2765.DOI: 10.13675/j.cnki.tjjs.190536

• Combustion, Heat and Mass Transfer • Previous Articles Next Articles

Computational Models Based on Analysis of Three Dimensional Flow Field Structures in Rotating Detonation

1.Computational Aerodynamics Institute，China Aerodynamics Research and Development Center，Mianyang 621000，China;2.State Key Laboratory of Aerodynamics，China Aerodynamics Research and Development Center，Mianyang 621000，China;3.School of Aerospace Engineering，Xiamen University，Xiamen 361102，China

Published:2021-08-15

基于旋转爆震三维流场结构分析的计算模型对比研究

刘朋欣^1,2，郭启龙^1,2，赵炜¹，李辰^1,2，李沁³，张涵信^1,2

1.中国空气动力研究与发展中心计算空气动力研究所，四川绵阳 621000;2.中国空气动力研究与发展中心空气动力学国家重点实验室，四川绵阳 621000;3.厦门大学航空航天学院，福建厦门 361102

基金资助:
国家自然科学基金（11902345；91541105）；四川省科技计划（2019YJ0272）。

Abstract

Abstract: The effects of numerical model on three-dimensional rotating detonation in an annular chamber are investigated by using different models including Euler， Navier-Stokes（N-S） and Reynolds-Averaged N-S（RANS）， Improved Delayed Detached-Eddy- Simulation（IDDES） and different wall boundary conditions including slip wall and non-slip wall. The chemical sources are evaluated by 7-species-and-8-reaction finite-rate chemical reaction model of hydrogen/air mixtures， and the convection terms are discretized by a fifth order WENO-type scheme with high resolution， namely WENO-PPM5. The three-dimensional rotating detonation wave in an annular chamber is simulated. And the flow structure， propagation property and propulsion performance are obtained. Comparisons of flow structure are made among the results of different numerical models. When using slip wall condition， the results of Euler and N-S are very similar. While considering non-slip wall condition， the existence of boundary layer leads the deflagration at the interface between reactant and product extending to upstream along the wall， and enlarges the range of deflagration zone. Besides， the unbounded side of detonation front becomes narrow and appears serve deformation. The deformation degrees show some difference in different computational methods.

Key words: Combustor;Rotating detonation;Three-dimensional;Numerical model;Flow structures;Propagation characteristics;Thrust performance

摘要： 为了研究不同计算模型对三维旋转爆震数值模拟的影响，分别基于Euler方程、N-S方程、RANS方法和IDDES方法并结合滑移、无滑移壁面边界条件，耦合氢气/空气的有限化学反应速率模型（7组分8基元反应），采用高分辨率的五阶有限差分格式WENO-PPM5离散对流项，对圆环筒型燃烧室内的三维旋转爆震波进行数值模拟，得到了不同模型下旋转爆震波的流场结构、传播特性和推力性能。对比了不同计算模型对流场结构的影响。当采用滑移壁面边界条件时，Euler方程和N-S方程的计算结果较为一致。当使用无滑移壁面边界条件时，边界层的存在会导致可燃混气与燃烧产物之间接触面上的爆燃燃烧区域沿壁面向上游渗透，增大爆燃区域的范围；且爆震波锋面非受限侧变窄、严重变形，不同计算方法计算的变形程度有所不同。

关键词: 燃烧室;旋转爆震;三维;计算模型;流场结构;传播特性;推力性能

LIU Peng-xin^1,2, GUO Qi-long^1,2, ZHAO Wei¹, LI Chen^1,2, LI Qin³, ZHANG Han-xin^1,2. Computational Models Based on Analysis of Three Dimensional Flow Field Structures in Rotating Detonation[J]. Journal of Propulsion Technology, 2020, 41(12): 2757-2765.

刘朋欣，郭启龙，赵炜，李辰，李沁，张涵信. 基于旋转爆震三维流场结构分析的计算模型对比研究[J]. 推进技术, 2020, 41(12): 2757-2765.

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Computational Models Based on Analysis of Three Dimensional Flow Field Structures in Rotating Detonation

基于旋转爆震三维流场结构分析的计算模型对比研究

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