Experimental study of natural convection in a square enclosure using differential interferometer

Abstract The results of an experimental study of laminar natural convection heat transfer in a square enclosure using air as the medium and having differentially heated isothermal vertical walls and adiabatic horizontal walls are reported. The study has been carried out using a differential interferometer (DI). After many trials, the authors have been able to achieve nearly adiabatic boundary conditions for top and bottom walls of the enclosure, in the laboratory environment. The study provides valuable information for many researchers – experimentalists or for those using numerical methods in analyzing problems of this type. A correlation for average convective Nusselt number is also provided.

[1]  G. D. Davis.  Natural convection of air in a square cavity: A bench mark numerical solution , 1983 .

[2]  S. P. Venkateshan,et al.  Correlations for free convection and surface radiation in a square cavity , 1994 .

[3]  S. Ostrach.  Natural convection in enclosures , 1988 .

[4]  G. de Vahl Davis,et al.  Laminar natural convection in an enclosed rectangular cavity , 1968 .

[5]  K.G.T. Hollands,et al.  Heat Transfer by Natural Convection Across a Vertical Air Cavity of Large Aspect Ratio , 1996 .

[6]  K. N. Seetharamu,et al.  Experimental analysis of unsteady free convection heat transfer from horizontal fin arrays , 1989 .

[7]  S. P. Venkateshan,et al.  Interaction of surface radiation with free convection in a square cavity , 1993 .

[8]  J. W. Elder.  Numerical experiments with free convection in a vertical slot , 1966, Journal of Fluid Mechanics.

[9]  Viktor Polevikov,et al.  Numerical study of problems on high-intensive free convection , 1977 .

[10]  Ashley F. Emery,et al.  Free Convection Through Vertical Plane Layers—Moderate and High Prandtl Number Fluids , 1969 .

[11]  G. Batchelor,et al.  Heat transfer by free convection across a closed cavity between vertical boundaries at different temperatures , 1954 .

[12]  Adrian Bejan,et al.  Note on Gill's solution for free convection in a vertical enclosure , 1979, Journal of Fluid Mechanics.

[13]  M. Modest.  Radiative heat transfer , 1993 .

[14]  Ashley F. Emery,et al.  Heat Transfer Across Vertical Layers , 1965 .

[15]  K. Hollands,et al.  Heat Transfer by Natural Convection Across Vertical and Inclined Air Layers , 1982 .

[16]  F. W. Schmidt,et al.  Heat Transfer by Laminar Natural Convection Within Rectangular Enclosures , 1970 .

[17]  W. H. Leong,et al.  On a physically-realizable benchmark problem in internal natural convection , 1998 .

[18]  J. W. Elder,et al.  Laminar free convection in a vertical slot , 1965, Journal of Fluid Mechanics.

[19]  E.R.G. Eckertf,et al.  Natural convection in an air layer enclosed between two vertical plates with different temperatures , 1961 .

[20]  A. E. Gill.  The boundary-layer regime for convection in a rectangular cavity , 1966, Journal of Fluid Mechanics.

[21]  Hayatoshi Sayama,et al.  NATURAL CONVECTION IN AN INCLINED RECTANGULAR CHANNEL AT VARIOUS ASPECT RATIOS AND ANGLES-EXPERIMENTAL MEASUREMENTS , 1975 .

[22]  G. Poots.  HEAT TRANSFER BY LAMINAR FREE CONVECTION IN ENCLOSED PLANE GAS LAYERS , 1958 .