Reduction of an effective thermal conductivity in the aspect of two flux model for absorbing, emitting and scattering media

• Autorzy: Koniorczyk P. , Zmywaczyk J. , Kowalski M.
• Języki publikacji: EN

Abstrakty

EN

The present paper deals with numerical analysis of the steadystate problem of the 'thickness effect curve' in semitransparent media, where simultaneos radiation and conduction heat transfer takes place. The analysis is conducted with the aid of a Two Flux Method (TFM) for absorbing, emitting and scattering media. Results are compared with the exact solution obtained fom a 1-D coupled radiation and conduction heat transfer model (RTE) in an emitting, absorbing as well as scattering medium.

Słowa kluczowe

EN

radiative-conductive heat transfer; reduction of thermal conductivity; thermal conductivity; two-flux method

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2004
• Tom: Vol. 25, no. 4
• Strony: 19--29
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Koniorczyk P.

• Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland

autor

Zmywaczyk J.

• Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland

autor

Kowalski M.

• Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland,

Bibliografia

• [1] FURMAŃSKI P., BANASZEK J.: A novel numerical model for simultaneous radiative and conductive heat transfer in emitting, absorbing and scattering media, Arch. of Thermodynamics, Vol. 23(2002), No. 1-2, 5-22.
• [2] HOWELL J. R.: Thermal radiation in participating media: the past, the present and some possible futures, J. Heat Transfer, Trans. of the ASME, 110(1998), 1220-1229.
• [3] DARYABEIGI K.,SULLINS A.D.: Effective thermal conductivity of high porosity open cell nickel foam, Proc. of 35th AIAA Thermophysics Conf., 2001/Anaheim, AIAA 2001-2819.
• [4] DARYABEIGI K.: Thermal analysis and design of multi-layer insulation for re-entry aerodynamic heating, Proc. of 35th AIAA Thermophysics Conf., 2001/Anaheim, AIAA 2001-2834.
• [5] KONIORCZYK P., ZMYWACZYK J.: Reduction of a measured effective thermal conduc tivity in aspect of the radiative transfer equation for a chosen absorbing and emitting media, Arch. of Thermodynamics, Vol. 23(2002), No. 1-2, 55-56.
• [6] KONIORCZYK P., ZMYWACZYK J.: Effect of thermal conductivity reduction in de termination of thermal conductivity of semitransparent media in aspect of analytical analysis and radiation transfer equation, Arch. of Thermodynamics, Vol. 24(2003), No. 4, 35-46.
• [7] OZISIK N. M.: Radiative transfer and interactions with conduction and convection, John Wiley & Sons, New York, 1973.
• [8] VISKANTA R.: Heat transfer by conduction and radiation in absorbing and scattering materials, J. of Heat Transfer, Feb. 1965, 143-150.