Computational Investigation on Thermo hydraulic Characterization of Liquid Hydrogen and Liquid Nitrogen in Micro channels

Due to increasing application of Micro-Electro-Mechanical Systems (MEMS), are in constant need of better and improved understanding of fluid flow and heat transfer characteristics, in micro channels. This paper offers a computational analysis, by using the FLUENT 14.0 and ICEM software. The purpose of this study is to explore, the Thermo-hydraulic traits of single-phase fluid flow by using air, liquid nitrogen, and liquid hydrogen as flowing fluids in smooth circular micro channels over the hydraulic diameter range from 1 μm to 100 μm. The mass flow rate varies from 0.001 kg/sec to 0.01 kg/sec for every particular diameter. The length of micro channel was kept constant as 0.1 meter. Flow in the micro channels was considered as turbulent and the variation in Reynolds number value for all three flowing fluids is considered to primarily examine the diversification in friction factor and nusselt number, over the diameter range. Leisurely contemplation is made to justify the parity of computational results from conventional theory, while friction factor and pressure drop was seen to be compatible with classical theory of fluid flow for all three flowing fluids.