Computational investigation, on thermohydraulic characterization of liquid hydrogen and liquid nitrogen in microchannels

Due to increasing application of Micro-Electro-Mecha nical Systems (MEMS), are in constant need of better and improved understanding of fluid flow and heat tr ansfer characteristics, in micro channels. This pap er 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 b y using air, liquid nitrogen, and liquid hydrogen a s flowing fluids in smooth circular micro channels over the hydraulic d iameter range from 1 μm to 100 μm. The mass flow rat e varies from 0.001 kg/sec to 0.01 kg/sec for every particul ar diameter. The length of micro channel was kept c onstant as 0.1 meter. Flow in the micro channels was considered as tu rbulent and the variation in Reynolds number value f or all three flowing fluids is considered to primarily examine th e diversification in friction factor and nusselt nu mber, over the diameter range. Leisurely contemplation is made to justify the parity of computational results from co nventional theory, while friction factor and pressure drop was seen to be compatible with classical theory of fluid flow for all three flowing fluids.