A NUMERICAL STUDY OF SINGLE-PHASE FORCED CONVECTIVE HEAT TRANSFER WITH FLOW FRICTION IN MICROCHANNELS --Research Note

Abstract three-dimensional simulations of the single-phase laminar flow and forced convective heat transfer of water in microchannels with small rectangular sections having specific hydraulic diameters and distinct geometric configurations were investigated numerically. the numerical results indicated that the laminar heat transfer was to be dependent upon the aspect ratio and the ratio of the hydraulic diameter to the center to center distance of the microchannels. the geometries and operating conditions of that indicated microchannel were created using a finite volume-based computational fluid dynamics technique. the aim of this paper is to obtain computational nusselt number in laminar flow using fluent cfd solver and to validate it with available experimental studies. the results are in a good agreement with experimental results within an error in acceptable range. in addition,conceivable temperature profiles and pressure drops have beenobtained at each z-location for each simulation, and related pressure drops were explored for each reynolds number. finally, the effects of the geometric parameters on the average nusselt number in the laminar flow were illustrated numerically.