NUMERICAL INVESTIGATION ON MULTISTAGE BIFURCATED RECTANGULAR MICROCHANNEL WITH ASYMMETRICAL HOTSPOTS USING NANOFLUID

Abstract

The numerical investigation of multistage-bifurcated microchannels with asymmetric hotspots using TiO<inf>2</inf> nanofluid has been studied. The latest multi-core processors generate an asymmetrical heat flux described as hotpots. In literature, compact heat sinks are used to mitigate hotspots to achieve the cooling demands in industrial applications The temperature in the microchannel heat sink increases along the fluid direction, resulting in higher temperatures at the outlet. One way is to introduce bifurcations near the microchannel exit to reduce the heatsink bottom temperature near the outlet. The effective use of bifurcations for asymmetric hotspot application with nanofluids has not been dealt with much. Subsequently, the study presents a numerical analysis in a multistage bifurcated microchannel with asymmetric hotspots. The analysis provides profound insight into hotspot influences over bifurcation stages and working fluid flow rate. It was found critically that the effect of bifurcations was more criti-cal on flow rate than to the asymmetric hotspot and nanofluids. © 2025 by Begell House, Inc.