泡状管换热器强化传热与整体性能的数值模拟Numerical simulation on heat transfer enhancement and performance of heat exchanger with bubbly pipe
杨富军,陈小龙,王光培,陈枫
摘要(Abstract):
针对泡状管管壳式换热器,采用FLUENT软件对其进行管程和壳程耦合传热的整体数值模拟,并将模拟结果与具有相同形式相同换热面积的光滑圆管换热器对比。通过结果对比分析泡状管强化传热的效果、压降及总传热系数的差异;评价泡状管壳式换热器的传热性能。结果表明:相比圆管,泡状管表面形状的变化对管壳两侧均起到强化传热的作用,同时管程流动阻力增大,但壳程阻力有所降低。总体传热系数较圆管有较大幅度提高。综合考虑总传热系数和压降,泡状管对壳程传热性能提升明显。
关键词(KeyWords): 泡状管;数值模拟;强化传热;压降阻力;传热性能评价准则
基金项目(Foundation): 国家高技术研究发展计划(“863”计划)课题(2012AA01A308)
作者(Author): 杨富军,陈小龙,王光培,陈枫
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