圆管插入十字形扭带强化传热数值模拟

工程热物理学报 , 2009, 30(7): 1216-1218.

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

基金项目: 国家重点基础研究发展规划(973计划)(2007CB206903) 国家自然科学基金(50721005)

NUMERICAL SIMULATION OF HEAT TRANSFER ENHANCEMENT BY ADDING CROSS TWISTED-TAPE IN THE CIRCULAR TUBE

对圆管内添加两种宽度的十字形扭带的强化传热进行了数值模拟,对传热与阻力特性和PEC值进行了比较分析,模拟结果表明:通过减小十字形扭带的宽度使换热管内流体核心区域扰动,在紊流区域能在换热强化减小不大的情况下有效减小流体阻力,从而能提高换热管的性能.

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