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一个湍流重正化群二阶矩封闭模式的数值模拟

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摘要 通过对充分发展旋转槽道和后台阶流动两个二维定常湍流问题的计算,比较了标准k-ε模型、Gibson-Launder二阶矩和一个基于湍流重正化群理论推导的二阶矩模型模拟复杂湍流运动的能力,尤其是检验这种新型的湍流重正化群二阶矩模型的性能.计算结果表明,与标准k-ε模型相比,Reynolds应力模型能够捕捉到旋转流动中由旋转带来的湍流流场结构的改变,能更准确地预测后台阶流动中的回流区长度,对于各物理量的计算,湍流重正化群二阶矩模型和Gibson-Launder模型的精度相当.
作者 陆晓霞 刘正锋 王晓宏
机构地区 中国科学技术大学热科学和能源工程系
出处 《自然科学进展》 北大核心 2008年第1期102-108,共7页
基金 国家自然科学基金(批准号:10472115) 教育部新世纪优秀人才支持计划 中国科学院力学研究所非线性力学国家重点实验室开放研究课题资助项目
关键词 湍流模式 二阶矩封闭模型 计算流体力学 重正化群
分类号 O414.13 [理学—理论物理] TK16 [动力工程及工程热物理—热能工程]
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参考文献25

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二级参考文献27

  • 1刘正锋,王晓宏.利用重正化群方法推导湍流二阶矩封闭模型[J].力学学报,2007,39(2):195-201. 被引量：2
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自然科学进展
2008年 第1期

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