Numerical study of TiO2 nanofluid in multistage-bifurcated microchannel subjected to hotspots

Abstract

The present study discusses implementation of multiple passive structures along the flow length using TiO2 nanofluid with 0.1% volume fraction to analyze a multistage-bifurcated microchannel. Fully developed laminar flow for different multistage plate configurations is used for the computational study, and additional investigations were done to evaluate pressure drop for Reynolds Number ranging from 250 to 500. Two different heat fluxes have been used: 4000 W/cm2 given for hotspot area and 1000 W/cm2 for the entire heat sink. Furthermore, the influence of flow rate on bifurcation stages combined with hotspot is highly investigated. Also, the pressure drop, temperature distribution, and flow streamlines are studied to evaluate cooling performance. © Springer Nature Singapore Pte Ltd. 2019.