| 引用本文: | 孙明波,梁剑寒,金亮,等.二维超声速混合层的大涡模拟.[J].国防科技大学学报,2005,27(5):86-90.[点击复制] |
| SUN Mingbo,LIANG Jianhan,JIN Liang,et al.The Large Eddy Simulation of Two-Dimensional Supersonic Mixing Layer[J].Journal of National University of Defense Technology,2005,27(5):86-90[点击复制] |
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| 二维超声速混合层的大涡模拟 |
| 孙明波, 梁剑寒, 金亮, 侯中喜, 王振国 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 对二维超声速混合层流动进行大涡模拟。采用五阶精度的WENO格式求解大尺度涡的控制方程，小尺度涡的作用采用Smagorinsky亚格子模型进行模拟。模拟结果再现了二维超声速混合层拟序结构，计算得到了涡组对、合并等现象。通过对流场不同位置压力振荡历程的频谱分析，对超声速混合层中的谐波变化规律作了初步探讨。计算得到的速度剖面的时均统计结果与实验结果相比，吻合程度较好。 |
| 关键词: 超声速混合层 大涡模拟 WENO格式 |
| DOI： |
| 投稿日期：2005-04-06 |
| 基金项目:国家部委基金资助项目（51413040901KG0145） |
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| The Large Eddy Simulation of Two-Dimensional Supersonic Mixing Layer |
| SUN Mingbo, LIANG Jianhan, JIN Liang, HOU Zhongxi, WANG Zhenguo |
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(College of Aerospace and Materials Engineering，National Univ.of Defense Technology，Changsha 410073，China)
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| Abstract: |
| Large eddy simulations are conducted to investigate the coherent structures of a two-dimensional supersonic mixing layer.The Governing equations of large scale eddies are solved with fifth-order WENO scheme and the effect of small scale eddies is simulated with Smagorinsky subgrid scale model.The results show that the development procedure of large structures and reveal the behavior of large eddies.Frequency spectrum analysis of the unsteady pressure data is performed to investigate the acoustic characteristics of different streamwise location in the mixing layer.Time-averaged velocity profiles obtained from the simulation are consistent with the experimental data. |
| Keywords: supersonic mixing layer large eddy simulation WENO scheme |
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