Heat transfer characteristics of developing gaseous slip-flow in rectangular microchannels with variable physical properties
作者： Azad Qazi Zade , Metin Renksizbulut , Jacob Friedman
DOI: 10.1016/J.IJHEATFLUIDFLOW.2010.10.004
关键词: Mechanics 、 Materials science 、 Heat transfer 、 Constant (mathematics) 、 Thermodynamics 、 Knudsen number 、 Physical property 、 Heat transfer coefficient 、 Flow (psychology) 、 Parasitic drag 、 Microchannel 、 Mechanical engineering 、 Condensed matter physics 、 Fluid Flow and Transfer Processes
摘要: Abstract The effects of variable physical properties on the flow and heat transfer characteristics simultaneously developing slip-flow in rectangular microchannels with constant wall temperature are numerically investigated. A colocated finite-volume method is used order to solve mass, momentum energy equations their most general form. Various channel aspect ratios studied at different Knudsen numbers. Simulations indicate that property assumption can result under/over-prediction local friction coefficients depending problem configuration. Density thermo-physical variations have significant predicting fully-developed regions. degree discrepancy varies for cases number, ratio difference between inlet wall. results suggest even low differences alter considerably.
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