Heat Transfer, Fluid Mechanics, Gas and Plasma

Intensity of thermal convection as a function of Grashof numbers and the solidification kinetics of a melt

P. F. Zavgorodnii, I. L. Povkh, G. M. Sevostianov

Donetsk State University

Abstract: The effect of the rate at which a solid phase forms and of the Grashof numbers on the intensity of the convective motion of a melt in a rectangular region is studied. It is established that the solidification kinetics of the melt substantially affects thermal convection only in the case of high-temperature fluids. The nature of the variation of the rate for two Prandtl numbers is studied as a function of the Grashof numbers, and the instability limits of the solution are determined.

UDC: 669.189

Received: 09.09.1974

 English version: High Temperature, 1976, 14:4, 728–732

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