Free convection in a shallow wavy enclosure

This paper presents the simulation of free convection heat transfer and fluid flow in a horizontal and shallow wavy enclosure. Its bottom wall is varied with a sinusoidal function while the top wall is flat. The wavy wall has constant hot temperature and ceiling is cold as verticals are insulated. The simulations are performed using CFDRC software. Results are presented in terms of streamlines, isotherms and Nusselt number for different aspect ratios, non-dimensional wave length and Rayleigh number. The obtained results showed that heat transfer is increased with the decreasing non-dimensional wave length and it is increased with the increasing of aspect ratio and Rayleigh number.

[1]  Omar Imine,et al.  Laminar natural convection in an inclined cavity with a wavy wall , 2002 .

[2]  Shalini,et al.  NATURAL CONVECTION IN A THERMALLY STRATIFIED WAVY VERTICAL POROUS ENCLOSURE , 2003 .

[3]  S. Mahmud,et al.  Free convection in an enclosure with vertical wavy walls , 2002 .

[4]  Amaresh Dalal,et al.  Laminar natural convection in an inclined complicated cavity with spatially variable wall temperature , 2005 .

[5]  I. Pop,et al.  Free convection induced by a horizontal wavy surface in a porous medium , 1994 .

[6]  Shohel Mahmud,et al.  Laminar free convection and entropy generation inside an inclined wavy enclosure , 2003 .

[7]  Yasin Varol,et al.  Buoyancy induced heat transfer and fluid flow inside a tilted wavy solar collector , 2007 .

[8]  Shohel Mahmud,et al.  Numerical investigation of natural convection inside a wavy enclosure , 2003 .

[9]  B. Kumar,et al.  Natural Convection Heat Transfer from a Horizontal Wavy Surface in a Porous Enclosure , 1997 .

[10]  B. V. Rathish Kumar,et al.  A Study of Free Convection Induced by a Vertical Wavy Surface with Heat Flux in a Porous Enclosure , 2000 .

[11]  B. V. Rathish Kumar,et al.  FREE CONVECTION HEAT TRANSFER FROM AN ISOTHERMAL WAVY SURFACE IN A POROUS ENCLOSURE , 1998 .

[12]  Hakan F. Oztop.  Numerical study of flow and heat transfer in curvilinear ducts: applications of elliptic grid generation , 2005 .

[13]  Enrong Lu,et al.  Numerical study on natural convection inside the channel between the flat-plate cover and sine-wave absorber of a cross-corrugated solar air heater , 2000 .