方管核心流区域添加内插物强化传热的实验研究

工程热物理学报 , 2008, 29(9): 1534-1536.

1.华中科技大学能源与动力工程学院,湖北,武汉,430074

2.华中科技大学能源与动力工程学院,湖北,武汉,430074

3.华中科技大学能源与动力工程学院,湖北,武汉,430074

4.华中科技大学能源与动力工程学院,湖北,武汉,430074

5.华中科技大学能源与动力工程学院,湖北,武汉,430074

6.华中科技大学能源与动力工程学院,湖北,武汉,430074

基金项目: 国家重点基础研究发展计划(973计划)(2007CB206900)

EXPERIMENTAL STUDY OF HEAT TRANSFER ENHANCEMENT BY ADDING INSERTERS IN THE CORE FLOW ZONE OF SQUARE DUCT

对方管核心流区域添加内插物强化对流传热进行了实验研究,对传热与阻力特性和PEC值进行了实验分析,实验结果表明,方管内的换热平均强化了2.2倍,PEC值为1.06～1.8之间.此外,实验表明,在层流和湍流情况下PEC均大于1,但层流状态下效果更加显著.

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