Abstract
Due to complexities of microfluidic devices, not all of the micro-ducts are straight. As a result, there is a need for utilizing geometric turns and serpentine microchannels. The main purpose of this study is to investigate the effect of applying sharp bends and curved corners to the microchannel geometry on the thermal and hydrodynamic behaviors of rarefied gas flow. In this regard Direct Simulation Monte Carlo method has been employed with pressure driven implicit boundary condition. Comparisons of mass flow rate, slip velocity, shear stress and heat transfer have been carried out between these cases. The obtained results depicted that the mass flow rate is increased by applying curvatures of various radii and the maximum enhancement in mass flow rate is for a radius-to-width ratio equal to 0.6.
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