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Titolo:
ON HYPERBOLIC HEAT-CONDUCTION AND THE 2ND LAW OF THERMODYNAMICS
Autore:
BAI C; LAVINE AS;
Indirizzi:
YEUNGNAM UNIV,DEPT ENGN MECH KEUNGSAN SOUTH KOREA UNIV CALIF LOS ANGELES,DEPT MECH AEROSP & NUCL ENGN LOS ANGELES CA 90095
Titolo Testata:
Journal of heat transfer
fascicolo: 2, volume: 117, anno: 1995,
pagine: 256 - 263
SICI:
0022-1481(1995)117:2<256:OHHAT2>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
2ND SOUND; WAVES;
Keywords:
CONDUCTION; THERMODYNAMICS AND 2ND-LAW; TRANSIENT AND UNSTEADY HEAT TRANSFER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
C. Bai e A.S. Lavine, "ON HYPERBOLIC HEAT-CONDUCTION AND THE 2ND LAW OF THERMODYNAMICS", Journal of heat transfer, 117(2), 1995, pp. 256-263

Abstract

For situations in which the speed of thermal propagation cannot be considered infinite a hyperbolic heat conduction equation is typically used to analyze the hear transfer. The conventional hyperbolic heat conduction equation is not consistent with the second law of thermodynamics, in the context of nonequilibrium rational thermodynamics. A modified hyperbolic type heat conduction equation, which is consistent with the second law of thermodynamics, is investigated in this paper. To solve this equation, we introduce a numerical scheme from the field of computational compressible pow. This scheme uses the characteristic properties of a hyperbolic equation and has no oscillation. By solving a model problem, we show that the conventional hyperbolic heat conduction equation call give physically wrong solutions (temperature less thanabsolute zero) under some conditions. The modified equation does not display these erroneous results. However, the difference between results of these two models is negligible except under extreme conditions.

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Documento generato il 24/11/20 alle ore 22:22:38