| 受限空间二维超声速混合层混合增强数值研究 |
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| 引用本文： | 晏至辉.受限空间二维超声速混合层混合增强数值研究[J].航空动力学报,2010,25(4). |
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| 作者姓名： | 晏至辉 |
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| 作者单位： | 国防科学技术大学航天与材料工程学院 |
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| 摘 要： | 本文研究了具有双燃烧室冲压发动机超声速燃烧室工程背景的受限空间超声速混合层的混合增强措施——低速流入口加入沿流向振荡。研究结果表明：它对二维混合层的混合增强效果明显，加振荡后流场燃烧强度加大，但仍属于较弱燃烧强度；振荡频率决定着涡量聚集区域的位置和大小，振幅决定着涡量分配和聚集的均匀程度。
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| 关 键 词： | 混合增强 受限空间混合层 超声速燃烧 数值模拟 |
| 收稿时间： | 3/27/2009 4:05:19 PM |
| 修稿时间： | 9/2/2009 9:04:37 AM |
Numerical Study of Mixing Enhancement for Two-Dimensional Confined Supersonic Mixing Layer |
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| Yan Zhi-Hui.Numerical Study of Mixing Enhancement for Two-Dimensional Confined Supersonic Mixing Layer[J].Journal of Aerospace Power,2010,25(4). |
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| Authors: | Yan Zhi-Hui |
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| Institution: | College of Aerospace and Material Engineering, National University of Defense Technology |
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| Abstract: | Numerical simulations are carried out on a mixing enhancement measure - streamwise surge added at low velocity flow inlet - for the confined supersonic mixing layer in DCR's supersonic combustor. The results show that with streamwise surge added at low velocity flow inlet, the positive impact on mixing enhancement is evident, and burning intensity increased, however it still belong to weak combustion. The frequency determines the location and scale of vortices assembling region, and the swing determines uniform degree of vortices distributed and assembled. |
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| Keywords: | mixing enhancement confined mixing layer supersonic combustion numerical simulation |
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