Showing papers by "Raymond Viskanta published in 1998"
TL;DR: In this paper, a numerical model simulating the convective heat and mass transfer and an efficient method in determining the coefficients for the moisture conductivity and the vapor diffusion resistance by an inverse procedure are introduced.
28 citations
TL;DR: In this paper, the spectral dependence of the absorption coefficient on wavelength is appropriately accounted for, and discrete ordinates method is used to solve the radiative transfer equation for the axisymmetric cylindrical geometry.
24 citations
TL;DR: In this paper, the spectral dependence of the absorption coefficient on wavelength is appropriately accounted for by solving the radiative transfer equation for the axisymmetric cylindrical geometry, and the resulting stresses under given impingement and thermal conditions are also discussed.
Abstract: Quenching of hot glass by impinging round air jets is analyzed. Understanding of the temperature distribution in glass is required for thermal tempering operations. In the analysis the spectral dependence of the absorption coefficient on wavelength is appropriately accounted for by solving the radiative transfer equation for the axisymmetric cylindrical geometry. Specularly reflecting boundaries are considered, and Fresnel's equations are used to predict the spectral directional reflection and transmission characteristics of the interfaces. The finite volume method is used to solve numerically the thermal energy equation. The numerical calculations have been carried out for combined forced convection and radiation cooling from the surfaces. Transient temperature distributions for parametric calculations are presented and discussed. Determination of the resulting stresses under given impingement and thermal conditions is also discussed.
11 citations
TL;DR: In this paper, the thermal behavior of a cryomicroscope stage has been analyzed by accounting for the spreading of heat and the thermal contact resistance between the solidification stage and the constant temperature plates.
3 citations