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粗糙单元对槽道湍流统计特性的影响
耿晨晖; 晋国栋; 何国威
Source Publication中国力学大会——2013论文摘要集
2013
Conference Name中国力学大会——2013
Conference Date2013-08-19
Conference Place中国北京
Abstract采用直接数值模拟方法计算了上壁面光滑,下壁面粗糙的充分发展的槽道湍流。基于光滑壁面的黏性速度和槽道半宽的黏性雷诺数Re=180。粗糙壁面采用在光滑壁上设置横向等间距方形长条的简化模型。运用浸入边界方法来处理这些粗糙单元。为了避免在粗糙单元后形成稳定的涡,采用了粗糙单元间距w与单元高度h之比为7的K型粗糙壁面。通过数值模拟,发现粗糙壁对湍流速
Keyword槽道湍流 统计特性 雷诺应力 单元 壁面 长条 关联函数 速度场 半宽 简化模型 粗糙面 雷诺数 二阶 结构函数 粗糙的:流场:等间距:方形:充分发展的:数值模拟:0
DepartmentLNM湍流
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48655
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
耿晨晖,晋国栋,何国威. 粗糙单元对槽道湍流统计特性的影响[C]中国力学大会——2013论文摘要集,2013.
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