| This paper presents an analytical and numerical investigation on two types of microchannels i.e., straight and wavy channel, leading to the single-phase cooling enhancements. A concept of microchannel heat sink has been designed. An approach has been made to know the pressure drop and heat transfer characteristics by considering one channel, a comparison was made with the base line channel. Heat flux conditions are applied to study the heat transfer characteristics. Data reductions are utilized based on past research works. Computational fluid dynamics software package "Fluent" is used to calculate the pressure drops, surface and outlet temperatures, surface heat transfer coefficients and Nusselts numbers in straight and wavy channels by varying Reynolds numbers. Velocity, pressure drop and temperature profiles are obtained from this software.;The results obtained have indicated higher pressure drop values, lower surface temperatures and higher outlet temperatures for wavy channels when compared to that of baseline channel, i.e., straight channels. The surface heat transfer coefficient for wavy channels are found to be higher than that of straight channel. Nusselts number values for straight and wavy channels were compared with the correlations and were found to be in agreement. For the considered assumptions and boundary conditions, the results depict that the wavy microchannel has better heat transfer performance than straight microchannel. |
