Experimental study of transient natural convection in an inclined rectangular enclosure

Abstract Simultaneous quantitative measurements are made of both the temperature and velocity fields for two-dimensional transient natural convection in an inclined rectangular enclosure using calibrated multichannel electronic interferometry and digital particle image velocimetry. The transient boundary conditions are initiated impulsively by heating and cooling two opposing walls. The evolution of the flow to steady-state is determined for a Prandtl number of 6.38, a Rayleigh number of 1.5 × 10 5 and an aspect ratio of 1.0, at angles of inclination of π/4, π/2 and 3π/4.

[1]  A. Bejan.  Convection Heat Transfer , 1984 .

[2]  J. P. Holman,et al.  Experimental methods for engineers , 1971 .

[3]  Jörg Imberger,et al.  Unsteady natural convection in a rectangular cavity , 1980, Journal of Fluid Mechanics.

[4]  G. Ivey,et al.  Experiments on transient natural convection in a cavity , 1984, Journal of Fluid Mechanics.

[5]  S. Armfield,et al.  Wave properties of natural-convection boundary layers , 1992, Journal of Fluid Mechanics.

[6]  S. G. Schladow,et al.  Oscillatory motion in a side-heated cavity , 1990, Journal of Fluid Mechanics.

[7]  H. Q. Yang,et al.  Study of local natural convection heat transfer in an inclined enclosure , 1989 .

[8]  C. J. Hoogendoorn,et al.  Numerical study of laminar and turbulent natural convection in an inclined square cavity , 1993 .

[9]  Steven W. Armfield,et al.  Transient features of natural convection in a cavity , 1990, Journal of Fluid Mechanics.

[10]  C. Willert,et al.  Digital particle image velocimetry , 1991 .

[11]  C. Vest.  Holographic Interferometry , 1979 .

[12]  D. Watt,et al.  Calibrated multichannel electronic interferometry for quantitative flow visualization , 1993 .

[13]  D. Watt,et al.  Optical and electronic design of a calibrated multichannel electronic interferometer for quantitative flow visualization. , 1995, Applied optics.

[14]  K. H. Winters.  Hopf Bifurcation in the Double-Glazing Problem With Conducting Boundaries , 1987 .

[15]  R. Mahajan,et al.  Instability and Transition in Buoyancy-Induced Flows , 1982 .

[16]  D. G. Briggs,et al.  Two-Dimensional Periodic Natural Convection in a Rectangular Enclosure of Aspect Ratio One , 1985 .

[17]  C. A. Hieber,et al.  Stability of vertical natural convection boundary layers: some numerical solutions , 1971, Journal of Fluid Mechanics.