Few papers investigated the effect of different nano-fluids and geometrical parameters of the micro channels on the performance of heat sinks. In this study, Nusselt number and pressure drop are investigated in differential geometry and Reynolds numbers. Then the effect of the micro-channel is studied for different heat flux. The results show that hexagonal micro-channels represents a better performance than the rectangular and the heat transfer of without using nano-particles in the hexagonal cross-section is about 9% higher than the rectangular cross-section and with the presence of nanoparticles (Al2O3 - CUO- TiO2, φ = 4%), heat transfer is about 30 to 40% higher than the base liquid.
TuckermanDBPeaseRFW.High-performance heat sinking for VLSI.IEEE Electr Dev Lett1981;
2: 126–129.
2.
CoblynMTruszkowskaAMohammadiM, et al.
Effect of PEO coating on bubble behavior within a polycarbonate microchannel array: a model for hemodialysis.J Biomed Mater Res Part B Appl Biomater2016;
104: 941–948.
3.
McHaleJPGarimellaSV.Heat transfer in trapezoidal microchannels of various aspect ratios. Int J Heat Mass Transf2010;
53: 365–375.
4.
AnbumeenakshiCThansekharMR.Experimental investigation of header shape and inlet configuration on flow maldistribution in microchannel. Exp Therm Fluid Sci2016;
75: 156–161.
5.
SivakumarAAlagumurthiNSenthilvelanT.Experimental investigation of forced convective heat transfer performance in nanofluids of Al 2 O 3/water and CuO/water in a serpentine shaped micro channel heat sink. Heat Mass Transf2016;
52: 1265–1274.
6.
YıldızOAçıkgözÖYıldızG, et al.
Single phase flow of nanofluid including graphite and water in a microchannel. Heat Mass Transf2019:
56: 1–24.
7.
YangDWangYDingG, et al.
Numerical and experimental analysis of cooling performance of single-phase array microchannel heat sinks with different pin-fin configurations. Appl Therm Eng2017;
112: 1547–1556.
8.
MohammedHIGiddingsDWalkerGS, et al.
CFD assessment of the effect of nanoparticles on the heat transfer properties of acetone/ZnBr2 solution. Appl Therm Eng2018;
128: 264–273.
9.
AziziZAlamdariAMalayeriM.Convective heat transfer of Cu–water nanofluid in a cylindrical microchannel heat sink. Energy Convers Manag2015;
101: 515–524.
10.
AziziZAlamdariAMalayeriM.Thermal performance and friction factor of a cylindrical microchannel heat sink cooled by Cu-water nanofluid. Appl Therm Eng2016;
99: 970–978.
11.
AhmadKAhmadN.Radiation effects on boundary layer flow of Cu-water and Ag-water nanofluids over a stretching plate with suction and heat transfer with convective surface boundary condition. Appl Appl Math2019;
14: 312–321.
12.
AhmadNA.Radiation effects on unsteady boundary layer flow of nanofluids Cu-water and Ag-water over a stretching plate and heat transfer with convective boundary condition. Int J Dyn Fluids2017;
13: 1–12.
13.
AhmadNAhmadK. Radiation effects on unsteady boundary layer flow past a stretching plate with suction and heat transfer with convective surface boundary condition. International Journal of Dynamics of Fluids 2017; 13: 1–12.
14.
ShiXLiSWeiY, et al.
Numerical investigation of laminar convective heat transfer and pressure drop of water-based Al 2 O 3 nanofluids in a microchannel. Int Commun Heat Mass Transf2018;
90: 111–120.
15.
SajjadEMohammadHDBMohammadM, et al.
Comparison of heat transfer & fluid flow in the micro-channel with rectangular and hexagonal cross section. Arhiv za Tehnicke Nauke/Arch Tech Sci2019; 21: 1–10.
16.
Dibaei BonabMHShafiiMBNobakhtiMH.Experimental and numerical investigation of fully developed forced convection of water-based Fe3O4 nanofluid passing through a tube in the presence of an alternating magnetic field. Adv Mech Eng2015;
7: 1687814015571023.
17.
NoninoCDel GiudiceSSavinoS.Temperature-dependent viscosity and viscous dissipation effects in microchannel flows with uniform wall heat flux. Heat Transf Eng2010;
31: 682–691.
18.
HuangHWuHZhangC.An experimental study on flow friction and heat transfer of water in sinusoidal wavy silicon microchannels. J Micromech Microeng2018;
28: 055003.
19.
LiJPetersonG.Geometric optimization of a micro heat sink with liquid flow. IEEE Trans Comp Packag Technol2006;
29: 145–154.
20.
VanapalliSter BrakeHJJansenHV, et al.
Pressure drop of laminar gas flows in a microchannel containing various pillar matrices. J Micromech Microeng2007;
17: 1381.
21.
ZhaoJWangYDingG, et al.
Design, fabrication and measurement of a microchannel heat sink with a pin-fin array and optimal inlet position for alleviating the hot spot effect. J Micromech Microeng2014;
24: 115013.
22.
AghaeiASheikhzadehGADastmalchiM, et al.
Numerical investigation of turbulent forced-convective heat transfer of Al2O3–water nanofluid with variable properties in tube. Ain Shams Eng J2015;
6: 577–585.
23.
IonescuVNeaguA.Numerical simulation of Al2O3–water nanofluid effects on the performance of a cross flow micro heat exchanger. IOP Conf Ser Mater Sci Eng2018;
400: 042032. Bristol: IOP Publishing.
24.
ZhouYChangH.Numerical simulation of hydrodynamic and heat transfer characteristics of slug flow in serpentine microchannel with various curvature ratio. Heat Mass Transf2019;
55: 3343–3358.
25.
XuBWongTNNguyenN-T.Investigation of heat transfer in a microchannel with same heat capacity rate. Heat Mass Transf2019;
55: 899–909.
26.
SaharAMWissinkJMahmoudMM, et al.
Effect of hydraulic diameter and aspect ratio on single phase flow and heat transfer in a rectangular microchannel. Appl Therm Eng2017;
115: 793–814.
27.
LeeMLeeY-KZoharY.Single-phase liquid flow forced convection under a nearly uniform heat flux boundary condition in microchannels. J Micromech Microeng2012;
22: 035015.
28.
GunnasegaranPMohammedHAShuaibNH, et al.
The effect of geometrical parameters on heat transfer characteristics of microchannels heat sink with different shapes. Int Commun Heat Mass Transf2010;
37: 1078–1086.
29.
AbdollahiAMohammedHAVanakiSM, et al.
Fluid flow and heat transfer of nanofluids in microchannel heat sink with V-type inlet/outlet arrangement. Alexandria Eng J2017;
56: 161–170.
30.
ChoiS.Fluid flow and heat transfer in microtubes.Micromech Sens Actuat Syst ASME 1991: 32: 123–134.
31.
ChoiSUEastmanJA.Enhancing thermal conductivity of fluids with nanoparticles.
Lemont:
Argonne National Lab, 1995.
32.
ShahR.Laminar flow friction and forced convection heat transfer in ducts of arbitrary geometry. Int J Heat Mass Transf1975;
18: 849–862.
33.
MoharanaMKSinghPKKhandekarS.Optimum Nusselt number for simultaneously developing internal flow under conjugate conditions in a square microchannel. J Heat Transf2012;
134: 071703.
34.
GarachDV.Heat transfer and pressure drop in microchannels with different inlet geometries for laminar and transitional flow of water.
Pretoria:
University of Pretoria, 2014.
35.
SohelMKhaleduzzamanSSaidurR, et al.
An experimental investigation of heat transfer enhancement of a minichannel heat sink using Al2O3–H2O nanofluid. Int J Heat Mass Transf2014;
74: 164–172.
36.
PeyghambarzadehSHashemabadiSChabiA, et al.
Performance of water based CuO and Al2O3 nanofluids in a Cu–Be alloy heat sink with rectangular microchannels.Energy Convers Manag2014;
86: 28–38.
