Numerical investigation of the effect of the insulation thickness on the degree of nonuniformity of the billet temperature | Zendy

Eakarach Somriewwongkul | Zendy; Chittin Tangthieng | Zendy

Open Access

Numerical investigation of the effect of the insulation thickness on the degree of nonuniformity of the billet temperature

Author(s) -

Eakarach Somriewwongkul,

Chittin Tangthieng

Publication year - 2014

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci120419089s

Subject(s) - dimensionless quantity , degree (music) , materials science , radiative transfer , thermal conduction , mechanics , heat transfer , volume (thermodynamics) , thermodynamics , composite material , physics , optics , acoustics

The degree of nonuniformity of the billet temperature subjected to the radiative heat loss to the discharge door with different insulation thicknesses is investigated in this present study. The 2-D steady-state heat conduction for the billet subjected to different heat fluxes is solved by being transformed into a dimensionless form. The Gauss-Seidel iterative method for a finite volume discretization of the billet is employed to obtain the temperature distribution of the billet. The numerical result is validated by comparing with the field measurement data. A qualitative agreement between these two is observed. An effect of different insulation thicknesses on the heat-transfer characteristics and the degree of nonuniformity of the billet temperature is examined. In case of the replaced 50-mm thick insulation of the discharge door, the radiative heat loss to the discharge door is reduced by 49% with the replaced insulation, and the degree of nonuniformity of the billet temperature is decreased by 23°C

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