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论文:2014,Vol:32,Issue(3):337-340 |
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引用本文： |
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王翔宇, 李栋. SST-SAS在小分离流动数值模拟中的表现测试[J]. 西北工业大学 |
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Wang Xiangyu, Li Dong. Behavior of SST-SAS for Mild Airfoil Trailing-Edge Separation[J]. Northwestern polytechnical university |
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| SST-SAS在小分离流动数值模拟中的表现测试 |
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| 王翔宇, 李栋 |
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| 西北工业大学 翼型叶栅空气动力学国防科技重点实验室, 陕西 西安 710072 |
| 摘要: |
| 作为一种新型RANS/LES混合方法,基于SST湍流模型的尺度自适应模拟方法(SST-SAS)近来得到越来越多的关注。以AS239翼型最大升力点临界状态为数值模拟算例,测试了SST-SAS在小分离流动中的表现并与SST-DES和SST-DDES进行比较。结果显示,在翼型表面边界层处SAS能够克服DES中出现的网格诱导分离,得到了类似DDES延迟RANS的效果,同时在翼型尾迹区明显降低了小分离流动中强烈的灰区效应影响,尾迹涡结构比DDES更加清晰细密。 |
| 关键词:
SST-SAS
SST-DES
SST-DDES
小分离流动
网格诱导分离(GIS)
灰区
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| Behavior of SST-SAS for Mild Airfoil Trailing-Edge Separation |
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| Wang Xiangyu, Li Dong |
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| National Key Laboratory of Aerodynamic Design and Research, Northwestern Polyteclnical University, Xi'an 710072, China |
| Abstract: |
| The Scale-Adaptive Simulation (SAS) based on SST turbulence model is more and more popular as a new hybrid RANS/LES method. The flow around AS239 airfoil at the maximum lift condition is simulated by SST-SAS to test its behavior in the mild separation. Compared with results from SST-DES and SST-DDES, SST-SAS on one hand overcomes the Grid Induced Separation (GIS) near the boundary like the delay of RANS in SST-DDES and on the other hand, it decreases the grey area in the wake and gets clearer vortexes and more accurate velocity profile than those obtainable with SST-DDES. |
| Key words:
airfoils
computer simulation
drag coefficient
flow separation
large eddy simulation
lift
Navier Stokes equations
pressure distribution
turbulence models
velocity distribution
vortex flow
wakes
grey area
Grid Induced Separation (GIS)
Large Eddy Simulation (LES)
SST-SAS
SST-DES
SST-DDES
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| 收稿日期: 2013-10-10
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(11072200)资助 |
| 通讯作者:
Email： |
| 作者简介: 王翔宇(1989-),西北工业大学博士研究生,主要从事计算流体力学中ＲANS/LES混合方法研究。
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| 作者相关文章 |
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| 王翔宇 在本刊中的所有文章 |
| 李栋 在本刊中的所有文章 |
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