| 新型栅元湍流流动及涡结构数值模拟 |
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| 引用本文： | 肖红光,鄢炳火,陈文振.新型栅元湍流流动及涡结构数值模拟[J].原子能科学技术,2015,49(5):842-847. |
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| 作者姓名： | 肖红光 鄢炳火 陈文振 |
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| 作者单位： | 海军工程大学 核能科学与工程系，湖北 武汉430033 |
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| 摘 要： | 本文利用非稳态雷诺平均模拟(URANS)对非均匀壁厚新型栅元中的准周期性大尺度涡结构和湍流流动特性进行了模拟和分析。结果表明:新型栅元的对流换热能力优于传统栅元的;增加周向角可强化涡结构强度;随周向角的增大,新型栅元摩擦阻力系数呈现先减小、后趋于恒定的变化趋势,而传热系数则会在达到极小值后略有上升。
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| 关 键 词： | 新型栅元 涡结构 数值模拟 CFD |
Numerical Simulation of Turbulent Flow and Vortex Structure in New Lattice |
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| XIAO Hong-guang,YAN Bing-huo,CHEN Wen-zhen.Numerical Simulation of Turbulent Flow and Vortex Structure in New Lattice[J].Atomic Energy Science and Technology,2015,49(5):842-847. |
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| Authors: | XIAO Hong-guang YAN Bing-huo CHEN Wen-zhen |
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| Affiliation: | Department of Nuclear Energy Science and Engineering, Naval University of Engineering, Wuhan 430033, China |
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| Abstract: | The quasi-periodic large scale vortex structure and turbulent flow characteristic in a new lattice with non-uniform wall thickness was investigated with the unsteady Reynolds-averaged Navier-Stokes (URANS) method. It is revealed that the new lattice is more superior to the traditional lattice. The increase of spanwise angle can enhance the vortex structure intensity. The resistance coefficient decreases firstly and then becomes stable with the increase of spanwise angle. But the heat transfer coefficient increases slightly after reaching minimum. |
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| Keywords: | new lattice vortex structure numerical simulation CFD |
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