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International Heat Transfer Conference 10

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

ANALYSIS OF TRANSIENT HEAT TRANSFER WITHIN CYLINDRICAL CONTAINERS

Claudio Cianfrini
Dipartimento di Fisica Tecnica, Universita di Roma "La Sapienza", via Eudossiana, 18 - 00184- Rome, Italy

Massimo Corcione
Dipartimento di Fisica Tecnica, Universita di Roma "La Sapienza", via Eudossiana, 18 - 00184- Rome, Italy

F. Mattiucci
Department of "Fisica Tecnica", University "La Sapienza", Rome, Italy

DOI: 10.1615/IHTC10.3520
pages 25-30

要約

A numerical and experimental analysis of transient heat transfer inside cylindrical liquid-filled containers, whose heights are comparable to their diameters, has been conducted under the hypothesis of given thermal power supply. The fluid and container surface mean temperatures and the time-dependent distributions of the coefficient of convection have been determined in the case of water. The distributions of the Nusselt number versus the Rayleigh number have been calculated. As a result, after a time interval from the start, a "pseudo-stationary" condition occurs, in the sense that the fluid-container temperature difference and the thermal flux absorbed by the fluid tend to keep constant in time.

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