TY - JOUR
TI - Numerical investigation of the effect of the insulation thickness on the degree of nonuniformity of the billet temperature
AU - Somriewwongkul Eakarach
AU - Tangthieng Chittin
JN - Thermal Science
PY - 2015
VL - 19
IS - 3
SP - 1097
EP - 1105
PT - Article
AB - 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.