| 引用本文: | 战庆亮,周志勇,葛耀君.Re=3 900圆柱绕流的三维大涡模拟[J].哈尔滨工业大学学报,2015,47(12):75.DOI:10.11918/j.issn.0367-6234.2015.12.013 |
| ZHAN Qingliang,ZHOU Zhiyong,GE Yaojun.3-Dimensional large eddy simulation of circular cylinder at Re=3 900[J].Journal of Harbin Institute of Technology,2015,47(12):75.DOI:10.11918/j.issn.0367-6234.2015.12.013 |
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| 摘要: |
| 为研究亚临界雷诺数范围内圆柱绕流流场特性及三维大涡模拟方法的适用性,基于C++语言及有限体积法开发了三维非结构化网格的大涡模拟计算程序.采用新的高稳定性高精度二阶离散格式,及Smagorinsky亚格子模型对Re=3 900均匀来流条件下的圆柱绕流问题进行数值模拟,并统计获得了平均流场参数及湍流流场的详细结构特性.结果表明：采用本文的网格、计算步长和高稳定性二阶离散精度大涡模拟方法计算所得的湍流场一阶统计特性和二阶统计特性与实验值吻合很好.验证了大涡模拟程序在模拟亚临界雷诺数下圆柱绕流流场平均值及脉动值的合理性. |
| 关键词: Smagorinsky亚格子模型 圆柱绕流 亚临界雷诺数 非结构化网格 二阶延迟修正 |
| DOI：10.11918/j.issn.0367-6234.2015.12.013 |
| 分类号:U441 |
| 基金项目:国家自然科学基金重大研究计划集成项目(91215302)； 国家重点基础研究发展计划(973计划)(2013CB036300). |
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| 3-Dimensional large eddy simulation of circular cylinder at Re=3 900 |
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ZHAN Qingliang, ZHOU Zhiyong, GE Yaojun
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（State Key Laboratory for Disaster Reduction in Civil Engineering(Tongji University), 20092 Shanghai, China）
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| Abstract: |
| This paper developed finite volume method program with Smagorinsky sub-grid scale model using 3-dimensional unstructured mesh to accurately determine the flow field characteristics behind a cylinder in sub critical region and the applicability of 3-dimensional large eddy simulation method of this kind of calculation based on C++ programming language. Numerical simulation was performed for the flow over a circular cylinder at a classical sub-critical Reynolds number (Re=3 900) using a new second order defer correction scheme for unstructured mesh. The results show that mean and fluctuating flow characteristics were compared well with the existing experimental results, 2-order discretization scheme large eddy method can be used in the simulation of sub-region Reynolds number outer flow simulation. The results also proved the reliability of high accuracy and stability discretization scheme. |
| Key words: Smagorinsky sub grid scale model flow over a circular cylinder sub-critical region unstructured mesh second order defer correction |
