固液两相流中微对流强化的机理分析与数值模拟

被引:6
作者
赵镇南
郝睿
王利
机构
[1] 天津大学热能工程系
[2] 天津大学热能工程系 天津
[3] 天津
[4] 天津
关键词
固液两相流; 微对流; 剪切力; 表观导热系数; 对流换热强化;
D O I
暂无
中图分类号
TK124 [传热学];
学科分类号
摘要
本文对分散型固液两相混合物层流管流中非均匀剪切力场导致的微对流现象以及由此引起的导热系数增强效应作了机理和影响因素分析,认为除速度分布、颗粒浓度和粒径以外,还存在颗粒形状、粒径分布,壁面热流方向、颗粒表面性质及其与载流介质间的相容性等多个影响因素.模拟计算表明,由微对流导致的对流换热强化与流体在管壁面上的表观导热系数强化具有相同的数量。
引用
收藏
页码:656 / 658
页数:3
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