A numerical simulation is conducted to examine the heat transfer and fluid flow characteristics of nanofluids in a triangular grooved microchannel heat sink (TGMCHS). The governing and energy equations are solved using the finite volume method (FVM). The influence of the geometrical parameters such as the angle (50–100°), depth (10–25 lm) and pitch (400–550 lm) of the groove on the thermal perf...

Nowadays, microchannels as closed circuits channels for fluid flow and heat removal are an integral part of the silicon-based electronic microsystems. Most of previous numerical studies on microchannel heat sinks (MCHS) have been performed for a two-dimensional domain using constant properties of the working fluid. In this study, laminar fluid flow and heat transfer of variable properties Al2O3...

Temperature has a great influence on the normal operation and service life of high-power electronic components. To cope with increasingly severe heat problems in integrated circuits, an enhanced transfer factor E is introduced to evaluate comprehensive performance microchannel sinks (MCHS). The computational fluid dynamics (CFD) software was used numerically study flow characteristics cone-colu...

Study of thermo-hydraulic characteristics a novel microchannel heat sink having flow disrupting pins is numerically and experimentally carried out in this paper. Cylindrical are inserted from top cover into the rectangular instead conventional technique pin-fins originating base microchannel. Initially, effect pin diameter on performance studied optimum established, later enhanced (PE-MCHS) com...

It is necessary to control the temperature of solar cells for enhancing efficiency with increasing concentrations of multiple photovoltaic systems. A heterogeneous two-phase model was established after considering the interacting between temperature, viscosity, the flow of nanofluid, and the motion of nanoparticles in the nanofluid, in order to study the microchannel heat sink (MCHS) using Al2O...

Abstract This research mainly proposed three new types of micro-channel heat sink structures. Numerical simulations and simulation calculations were carried out on the structure. The groups inlet flow rates used as main variables to analyse sinks, model characteristics transfer performance. In addition, it was compared with traditional rectangular (RT-MCHS). Based RT-MCHS, microchannel reverse ...

In this paper, three-dimensional incompressible laminar fluid flow in a rectangular microchannel heat sink (MCHS) using Al2O3/water nanofluid as a cooling fluid is numerically studied. CFD prediction of fluid flow and forced convection heat transfer properties of nanofluid using single-phase and two-phase model (Eulerian-Eulerian approach) are compared. Hydraulic and thermal performance of microch...

Traditional cooling technologies are now become inadequate for electronic chips due to size reduction and increase in generated heat flux. Microchannel sink (MCHS) is promising candidate its superior performance than competitors. The aim of this study investigate the hydrothermal MCHS with novel trefoil shape ribs. three configurations ribs are: MC-AWTR (all wall ribs), MC-SWTR (side MC-BWTR (b...

In this work, slip flow of helium gas has been studied in a three dimensional rectangular microchannel heat sink with 11 microchannel and 10 rectangular fins. Helium gas flow is considered ideal and incompressible. The finite volume method with using coupled algorithm is employed to carry out the computation. To validate the present work, comparison with numerical and experimental studies is do...

the paper numerically presents laminar forced convection of a nanofluid flowing in a duct at microscale. results were compared with both analytical and experimental data and observed good concordance with previous studies available in the literature. influences of brinkman and reynolds number on thermal and hydrodynamic indexes have been investigated. for a given nanofluid, no change in efficie...