Numerical investigation of Al2O3/water nanofluid laminar convective heat transfer through triangular ducts

In this article, laminar flow-forced convective heat transfer of Al2O3/water nanofluid in a triangular duct under constant wall temperature condition is investigated numerically. In this investigation, the effects of parameters, such as nanoparticles diameter, concentration, and Reynolds number on the enhancement of nanofluids heat transfer is studied. Besides, the comparison between nanofluid and pure fluid heat transfer is achieved in this article. Sometimes, because of pressure drop limitations, the need for non-circular ducts arises in many heat transfer applications. The low heat transfer rate of non-circular ducts is one the limitations of these systems, and utilization of nanofluid instead of pure fluid because of its potential to increase heat transfer of system can compensate this problem. In this article, for considering the presence of nanoparticl: es, the dispersion model is used. Numerical results represent an enhancement of heat transfer of fluid associated with changing to the suspension of nanometer-sized particles in the triangular duct. The results of the present model indicate that the nanofluid Nusselt number increases with increasing concentration of nanoparticles and decreasing diameter. Also, the enhancement of the fluid heat transfer becomes better at high Re in laminar flow with the addition of nanoparticles.

[1]  C. T. Nguyen,et al.  Developing laminar mixed convection of nanofluids in an inclined tube with uniform wall heat flux , 2009 .

[2]  D. Das,et al.  Numerical study of turbulent flow and heat transfer characteristics of nanofluids considering variable properties , 2009 .

[3]  Stephen U. S. Choi.  Enhancing thermal conductivity of fluids with nano-particles , 1995 .

[4]  W. Roetzel,et al.  Conceptions for heat transfer correlation of nanofluids , 2000 .

[5]  Saeed Zeinali Heris,et al.  Experimental investigation of oxide nanofluids laminar flow convective heat transfer , 2006 .

[6]  Saeed Zeinali Heris,et al.  EXPERIMENTAL INVESTIGATION OF CONVECTIVE HEAT TRANSFER OF AL2O3/WATER NANOFLUID IN CIRCULAR TUBE , 2007 .

[7]  E. Sparrow.  Laminar flow in isosceles triangular ducts , 1962 .

[8]  Yulong Ding,et al.  Experimental investigation into convective heat transfer of nanofluids at the entrance region under laminar flow conditions , 2004 .

[9]  Young I Cho,et al.  HYDRODYNAMIC AND HEAT TRANSFER STUDY OF DISPERSED FLUIDS WITH SUBMICRON METALLIC OXIDE PARTICLES , 1998 .

[10]  William W. Yu,et al.  ANOMALOUSLY INCREASED EFFECTIVE THERMAL CONDUCTIVITIES OF ETHYLENE GLYCOL-BASED NANOFLUIDS CONTAINING COPPER NANOPARTICLES , 2001 .

[11]  M. Das,et al.  Natural convection heat transfer augmentation in a partially heated and partially cooled square cavity utilizing nanofluids , 2009 .

[12]  Saeed Zeinali Heris,et al.  Investigation of CuO/Water Nanofluid Laminar Convective Heat Transfer through a Circular Tube , 2006 .

[13]  Soon-Heung Chang,et al.  Boiling heat transfer performance and phenomena of Al2O 3-water nano-fluids from a plain surface in a pool , 2004 .

[14]  Jules Thibault,et al.  Pool boiling heat transfer performance of Newtonian nanofluids , 2009 .

[15]  F. Mayinger,et al.  Heat Transfer Enhancement in a Plate Heat Exchanger with RIB-Roughened Surfaces , 1999 .

[16]  Stephen U. S. Choi,et al.  APPLICATION OF METALLIC NANOPARTICLE SUSPENSIONS IN ADVANCED COOLING SYSTEMS * , 2022 .

[17]  E. Sparrow,et al.  Laminar heat transfer and pressure drop in isosceles triangular, right triangular, and circular sector ducts , 1965 .

[18]  David F. Fletcher,et al.  Thermohydraulic performance of a periodic trapezoidal channel with a triangular cross-section , 2008 .

[19]  R. Shah.  Laminar flow friction and forced convection heat transfer in ducts of arbitrary geometry , 1975 .

[20]  Y. Xuan,et al.  Investigation on Convective Heat Transfer and Flow Features of Nanofluids , 2003 .

[21]  Wenhua Yu,et al.  The Role of Interfacial Layers in the Enhanced Thermal Conductivity of Nanofluids: A Renovated Maxwell Model , 2003 .

[22]  W. Roetzel,et al.  Pool boiling characteristics of nano-fluids , 2003 .

[23]  R. Shah.  Laminar Flow Forced convection in ducts , 1978 .

[24]  D. Valougeorgis,et al.  Rarefied gas flow in a triangular duct based on a boundary fitted lattice , 2008 .

[25]  Saeed Zeinali Heris,et al.  Numerical Investigation of Nanofluid Laminar Convective Heat Transfer through a Circular Tube , 2007 .

[26]  C. T. Nguyen,et al.  Heat transfer enhancement in turbulent tube flow using Al2O3 nanoparticle suspension , 2006 .

[27]  F. Schmidt,et al.  Heat transfer in fully developed laminar flow through rectangular and isosceles triangular ducts , 1967 .

[28]  P. F. Vassallo,et al.  Pool boiling heat transfer experiments in silica–water nano-fluids , 2004 .

[29]  EFFECTS OF THERMAL DISPERSION AND TURBULENCE IN FORCED CONVECTION IN A COMPOSITE PARALLEL-PLATE CHANNEL: INVESTIGATION OF CONSTANT WALL HEAT FLUX AND CONSTANT WALL TEMPERATURE CASES , 2002 .

[30]  J. Eastman,et al.  Measuring Thermal Conductivity of Fluids Containing Oxide Nanoparticles , 1999 .

[31]  S. Kakaç,et al.  Heat Exchangers: Thermal Hydraulic Fundamentals and Design , 1985 .

[32]  Saeed Zeinali Heris,et al.  Convective Heat Transfer of a Cu/Water Nanofluid Flowing Through a Circular Tube , 2009 .

[33]  Ahmet Z. Sahin,et al.  Irreversibilities in various duct geometries with constant wall heat flux and laminar flow , 1998 .

[34]  Stephen U. S. Choi,et al.  Role of Brownian motion in the enhanced thermal conductivity of nanofluids , 2004 .

[35]  Kambiz Vafai,et al.  Heat transfer enhancement through control of thermal dispersion effects , 2005 .

[36]  Saeed Zeinali Heris,et al.  Heat transfer enhancement by application of nano-powder , 2010 .

[37]  Amin Behzadmehr,et al.  Numerical study of laminar mixed convection of a nanofluid in horizontal curved tubes , 2007 .

[38]  R. Shah,et al.  Compact Heat Exchangers , 1990 .

[39]  Li-Zhi Zhang,et al.  Laminar flow and heat transfer in plate-fin triangular ducts in thermally developing entry region , 2007 .

[40]  Arun S. Mujumdar,et al.  A review on nanofluids - part II: experiments and applications , 2008 .

[41]  Amin Behzadmehr,et al.  Developing mixed convection of a nanofluid in a horizontal tube with uniform heat flux , 2007 .

[42]  Arthur E. Bergles,et al.  Heat Transfer Enhancement—The Encouragement and Accommodation of High Heat Fluxes , 1997 .

[43]  Alexander P. Kozlov,et al.  Effects of Exterior Surface Dimples on Heat Transfer and Friction Factors for a Cross-Flow Heat Exchanger , 2006 .

[44]  Saeed Zeinali Heris,et al.  HEAT TRANSFER ENHANCEMENT USING AL2O3/WATER NANOFLUID IN A TWO-PHASE CLOSED THERMOSYPHON , 2009 .