Experimental Study on Heat Transfer and Friction Factor in Laminar Forced Convection over Flat Tube in Channel Flow
作者： Tahseen Ahmad Tahseen , M.M. Rahman , M. Ishak
DOI: 10.1016/J.PROENG.2015.05.005
关键词:
摘要: The heat transfer and fluid flow over a flat tube in the channel with laminar forced convection is experimentally investigated. experiments were conducted at direction, five air velocity between 0.2 and1.0 m/s, Reynolds number based on hydraulic diameter (ReDh) was considered from 124.5 to 622.5. uniform flux supplies are surface of 354.9, 1016.3 1935.8 W/m2 respectively. experimental results indicate that average Nusselt numbers (Nu¯Dh) for increased increase ReDh fixed supply. Nu¯Dh an supply ReDh. On other hand, friction factor decreased increases front free stream velocity. relationship power law, theNu¯Dh–ReDh correlation found be Nu¯Dh=C×(ReDh)m. achieved good predictions measured data minimum root mean square value 99.70%.
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