Transient cooling by natural convection in a two-dimensional square enclosure

Nicolette, V.F.; Yang, K. T.; Lloyd, John R.

doi:10.1016/0017-9310(85)90146-2

Cited by 85 publications

(17 citation statements)

References 9 publications

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“…For example, the numerical studies by Hyun [12,13] elucidated the flow and temperature structures of the heat-up process of an initially homogeneous fluid in a cylinder with a linearly-heated sidewall using a finite-difference model and the effect of Pr on heatup of a stratified fluid in an enclosure. Nicolette and Yang [14] made a numerical and experimental investigation into two-dimensional transient natural convection of single-phase fluids inside a completely filled square enclosure with one vertical wall cooled and the other three walls insulated. Otis and Roessler [15] conducted an experimental investigation into the development of stratification of a gas in a cylindrical enclosure and provided experimental support for the existence of internal waves and revealed several time constants that characterize the process.…”

Section: Introductionmentioning

confidence: 99%

Long-term behavior of cooling fluid in a vertical cylinder

Lin

Armfield

2005

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Long-term behavior of cooling fluid in a vertical cylinder

Lin

Armfield

2005

International Journal of Heat and Mass Transfer

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“…The study of Ostrach (1972) has made a big contribution on the fundamental aspect of natural convection in closed cavity. Let us also mention the numerical and experimental works of Nicolette, Yang and Lloyd (1985) that concern the transient bidimensional and one-phase natural convection that occurs in a cubic cavity filled with air, with one vertical partition cooled and the other partitions adiabatic. Leong Heat loss from the absorber occurs via a complex interaction between radiation, convection and conduction within the cavity, and then from the cavity to the surroundings.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Coupled Heat and Mass Transfer in a Trapezoidal Cavity

Hammami

Mseddi

Baccar

2007

Engineering Applications of Computational Fluid Mechanics

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In this paper, we present a numerical three-dimensional study of coupled heat and mass transfer by natural convection occurring in a trapezoidal cavity. Our objective is to evaluate numerically the thermal and hydrodynamic behaviour of this system. It is assumed that the cavity vertical walls are thermally isolated and impermeable, and we imposed on the lower surface a constant high temperature and concentration. The upper surface is supposed to be cooled at a constant temperature and has a zero concentration.Governing equations are solved by a finite-volume technique and provide the temperature, concentration and velocity fields in binary mixture air-water vapor system. The obtained results show that the flow configuration depends strongly on the α angle inclination of the upper wall. The influence of the cavity dimensions on heat and mass transfer rates is also examined. In particular, as the aspect ratio increases, multi-cellular flow patterns start to form.

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“…Patterson (1984) investigated the transient natural convection in a cavity driven by internal buoyancy sources and sinks distributed linearly in the horizontal and uniformly in the vertical direction using a scaling analysis and found that there are a number of possible transient flow regimes. Nicolette & Yang (1985) made a numerical and experimental investigation into the two-dimensional transient natural convection of single-phase fluids inside a completely filled square enclosure with one vertical wall cooled and the other three walls insulated. Otis & Roessler (1987) conducted an experimental investigation into the development of stratification in a gas in a cylindrical enclosure, provided experimental support for the existence of internal waves, and revealed several time constants that characterize the process.…”

Section: Introductionmentioning

confidence: 99%

Cooling of aPr<1 fluid in a rectangular container

2007

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The flow behaviour associated with the cooling of an initially quiescent isothermal Newtonian fluid with Prandtl number Pr less than unity in a rectangular container by unsteady natural convection with an imposed lower temperature on vertical sidewalls is investigated by scaling analysis and direct numerical simulation. The flow is dominated by two distinct stages of development, i.e. the boundary-layer development stage adjacent to the sidewall and the subsequent cooling-down stage. The first stage can be further divided into a start-up stage, transitional stage, and steady-state stage. The parameters characterizing the flow behaviour are the boundary-layer thickness, the maximum vertical velocity within the boundary layer, the time for the boundary layer to reach the steady state, the Nusselt number across the sidewall at the boundarylayer development stage, the time for the fluid in the container to be fully cooled down, and the average fluid temperature over the whole volume of the container.

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Transient cooling by natural convection in a two-dimensional square enclosure

Cited by 85 publications

References 9 publications

Long-term behavior of cooling fluid in a vertical cylinder

Long-term behavior of cooling fluid in a vertical cylinder

Numerical Study of Coupled Heat and Mass Transfer in a Trapezoidal Cavity

Cooling of aPr<1 fluid in a rectangular container

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