The present work evaluates the effective thermal conductivity of an ablative composite in the state of virgin material and in three different paths of degradation. The material is assumed to undergo ablation with formation of void pores and with formation of char and void pores. The one dimensional effective thermal conductivity is evaluated theoretically by the solution of heat conduction under two extreme assumptions, i.e. parallel isotherms and parallel heat fluxes. The paper presents the theoretical model applied to an elementary cubic cell of the composite material made of two crossed fibres and matrix. A numerical simulation is carried out to compare numerical results with the theoretical ones for different values of the filler volume fraction.

Gori, F., Corasaniti, S., Worek, W., Minkowycz, W. (2010). Theoretical and numerical predictions of the thermal conductivity of thermal protection systems. In ASME-ATI-UIT conference on thermal and environmental issues in energy systems, Sorrento, Italy, 16-19 May 2010 (pp.957-962).

Theoretical and numerical predictions of the thermal conductivity of thermal protection systems

GORI, FABIO;CORASANITI, SANDRA;
2010-05-01

Abstract

The present work evaluates the effective thermal conductivity of an ablative composite in the state of virgin material and in three different paths of degradation. The material is assumed to undergo ablation with formation of void pores and with formation of char and void pores. The one dimensional effective thermal conductivity is evaluated theoretically by the solution of heat conduction under two extreme assumptions, i.e. parallel isotherms and parallel heat fluxes. The paper presents the theoretical model applied to an elementary cubic cell of the composite material made of two crossed fibres and matrix. A numerical simulation is carried out to compare numerical results with the theoretical ones for different values of the filler volume fraction.
ASME-ATI-UIT 2010 Conference on thermal and environmental issues in energy systems
Sorrento (Italy)
2010
Rilevanza internazionale
contributo
17-mag-2010
mag-2010
Settore ING-IND/10 - FISICA TECNICA INDUSTRIALE
English
Ablative composite, thermal conductivity, cubic cell model.
Intervento a convegno
Gori, F., Corasaniti, S., Worek, W., Minkowycz, W. (2010). Theoretical and numerical predictions of the thermal conductivity of thermal protection systems. In ASME-ATI-UIT conference on thermal and environmental issues in energy systems, Sorrento, Italy, 16-19 May 2010 (pp.957-962).
Gori, F; Corasaniti, S; Worek, W; Minkowycz, W
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/16462
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