Numerical Study of Mixing and Flow Field Characteristics on a Three-Dimensional Non-Premixed Rotating Detonation

被引：0
|
作者：
Zheng Y.-S. [1 ]
Wang C. [1 ]
Wang Y.-H. [2 ]
Le J.-L. [1 ]
机构：
[1] Science and Technology on Scramjet Laboratory of Hypervelocity Aerodynamics Institute, CARDC, Mianyang
[2] Research Center of Combustion Aerodynamics, Southwest University of Science and Technology, Mianyang
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 02期
关键词：
Flow field characristics; Mixing performance; Non-premixed numerical simulation; Rotating detonation engine;
D O I：
10.13675/j.cnki.tjjs.180092
中图分类号：
学科分类号：
摘要：
In order to analyse the flow field characteristics of non-premixed rotating detonation combustor, based on 7-species 8-step hydrogen-air chemical reaction mechanism, three-dimensional numerical simulation was performed with viscous effect. The numerical results show that in the non-reaction flow field, H2 and air are well blended within a quite short distance. While in the detonation flow field, fresh hydrogen mainly concerntrated near the inner wall because of the high combustor pressure, thus resulting in the rotating detonation wave located near the inner wall. In the combustor, two induced shock waves are obversed in circumferential and radial directions behind the detonation wave, the highest pressure/temperature zones after the detonation wave are mismatching. At the head of the combustor, three induced waves are observed and the injection of the hydrogen/air are effected by the detonation wave via the upstream induced shock wave. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：407 / 415
页数：8
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