Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30184
Numerical Modeling of Natural Convection on Various Configuration of Rectangular Fin Arrays on Vertical Base Plates

Authors: H.R.Goshayeshi, M.Fahim inia, M.M.Naserian

Abstract:

In this research, the laminar heat transfer of natural convection on vertical surfaces has been investigated. Most of the studies on natural convection have been considered constantly whereas velocity and temperature domain, do not change with time, transient one are used a lot. Governing equations are solved using a finite volume approach. The convective terms are discretized using the power-law scheme, whereas for diffusive terms the central difference is employed. Coupling between the velocity and pressure is made with SIMPLE algorithm. The resultant system of discretized linear algebraic equations is solved with an alternating direction implicit scheme. Then a configuration of rectangular fins is put in different ways on the surface and heat transfer of natural convection on these surfaces without sliding is studied and finally optimization is done.

Keywords: Natural convection, vertical surfaces, SIMPLE algorithm, Rectangular fins.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1055853

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1151

References:


[1] BhavnAni,S.H.,Bergles, A.E. "Effect of surface geometry and orientation on laminar natural convection heat transfer from a vertical flat plate with transvers roughness elements”Int.J.Heat Mass Transfer , Vol. 44,No. 1,PP 155-167
[2] Jofre.R.J,Baron.R. F "Free Convection heat transfer to a rough plate,” ASME Paper No.67 .
[3] Ekert, E. R. Jakson,T.w, "Analysis of turbulent Free Convection Boundry on flat plate,” NCA Report .1015 ,(1951)
[4] Bergles,A.E.,junkhan,G.H, "Energy Conservetion Via heat transfer mangment quarterly,” Progress Report No . Coo . 4649-59 January.31 March (1979)
[5] BhavnAni,S.H.,Bergles, A.E, "Effect of surface geometry and orientation on laminar natural convection heat transfer from a vertical flat plate with transvers roughness elements,”Int.J.Heat Mass Transfer , Vol.43, No. 1,PP 135-121
[6] Rubbert, P.E, "The emergence of advanced computional methods in the aerodyna,icDsign of commercial Trans port aircraft,” inProc.Intsymp.comp.Fluid Dynamics, Vol.1 ,PP.42-48
[7] Green, J.E, "In numerical methods in aeronoautical fluid Dynamics,” ed . by P .L.Roe ,PP.1-39(1982)
[8] Chapman, D.R,J.AIAA, Vol. 1,pp.293-1313,(1981)
[9] Churchill.S.W.,Usagi, "A general for the correlation of Rates of transfer and other Phenomena,”Alche J. Vol. 18, PP.1121-1128(1979)
[10] KavehpourHPFaghri MAsako Y1997, "Effects of compressibility and rarefaction on gaseous flows in microchannels,”American Society of Mechanical Engineers Heat. Transfer Division (Publication) HTD,pp. 41-47.
[11] Gray D,Giorgini A,1976, "The validity of the boussinesq approximation for liquids and gases,” International Journal of Heat and Mass Transfer 19: 545-551.
[12] Patankar SV,1980, "Numerical Heat Transfer and Fluid Flow,” McGraw-Hill, New York
[13] Harahap, F., Setio, D., " Correlations for Heat Dissipation and Natural Convection Heat-Transfer from Horizontally-Based, Vertically-Finned Arrays," International Journal of Applied Energy, Vol. 69, pp. 29-38, 2001.