scholarly journals Discussion: “Free Convection From a Two-Dimensional Finite Horizontal Plate” (Chen, Ching-Jen, 1970, ASME J. Heat Transfer, 92, pp. 548–550)

1971 ◽  
Vol 93 (1) ◽  
pp. 127-128
Author(s):  
Zee¨v Rotem
Keyword(s):  
Heat Transfer ◽  
Free Convection ◽  
Two Dimensional ◽  
Horizontal Plate

scholarly journals Two-Dimensional Model of a Space Station Freedom Thermal Energy Storage Canister

1994 ◽  
Vol 116 (2) ◽  
pp. 114-121 ◽  
Author(s):  
T. W. Kerslake ◽  
M. B. Ibrahim
Keyword(s):  
Heat Transfer ◽  
Energy Storage ◽  
Free Convection ◽  
Phase Change ◽  
Thermal Energy ◽  
Heat Engine ◽  
Space Station ◽  
Working Fluid ◽  
Two Dimensional ◽  
Liquid Salt

The Solar Dynamic Power Module being developed for Space Station Freedom uses a eutectic mixture of LiF-CaF2 phase-change salt contained in toroidal canisters for thermal energy storage. This paper presents results from heat transfer analyses of the phase-change salt containment canister. A two-dimensional, axisymmetric finite difference computer program which models the canister walls, salt, void, and heat engine working fluid coolant was developed. Analyses included effects of conduction in canister walls and solid salt, conduction and free convection in liquid salt, conduction and radiation across salt vapor-filled void regions, and forced convection in the heat engine working fluid. Void shape and location were prescribed based on engineering judgment. The salt phase-change process was modeled using the enthalpy method. Discussion of results focuses on the role of free convection in the liquid salt on canister heat transfer performance. This role is shown to be important for interpreting the relationship between ground-based canister performance (in 1-g) and expected on-orbit performance (in micro-g). Attention is also focused on the influence of void heat transfer on canister wall temperature distributions. The large thermal resistance of void regions is shown to accentuate canister hot spots and temperature gradients.

Influence of the angle of inclination of the cavity on heat transfer under free convection of an anomalously thermo viscous fluid

2006 ◽  
Vol 4 ◽  
pp. 166-173
Author(s):  
K.V. Moiseyev
Keyword(s):  
Heat Transfer ◽  
Free Convection ◽  
Viscous Fluid ◽  
Two Dimensional ◽  
Quadratic Dependence ◽  
Rayleigh Numbers

In this paper, two-dimensional free convection of a liquid with a quadratic dependence of viscosity on the temperature in square is simulated numerically at different angles of inclination to the horizon. The integral coefficients of heat transfer on isothermal boundaries and the minimum critical Rayleigh numbers are calculated.

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