不连续双斜内肋管的管外换热性能

工程热物理学报 , 2008, 29(2): 327-330.

1.清华大学航天航空学院,传热与能源利用北京市重点实验室,北京,100084

2.清华大学航天航空学院,传热与能源利用北京市重点实验室,北京,100084

3.清华大学航天航空学院,传热与能源利用北京市重点实验室,北京,100084

4.清华大学航天航空学院,传热与能源利用北京市重点实验室,北京,100084

基金项目: 国家重点基础研究发展计划(973计划)(2007CB206901)

THE OUTSIDE TUBE HEAT TRANSFER PERFORMANCE OF THE DISCRETE DOUBLE INCLINED RIBS TUBE

实验和数值研究了不连续双斜内肋管管外的换热性能.在不连续双斜内肋管管外倾斜凹坑的作用下,不连续双斜内肋管和光滑圆管组成的套管内出现了纵向涡流动,雷诺数为30000~90000时比光滑套管换热增强50%,阻力增加60%～70%.

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