Radiation Heat Transfer in Moving Media

Technique of measuring the emissivity coefficient of solid materials surface

“…3. 1with boundary conditions (2) and initial condition (3). In the condition (3) as "experimental" temperature values are taken as T(0, 0) = 513 K, T(R, 0) = 1000 K (Fig.…”

“…Solid materials with low thermal conductivity as heat-shielding materials (HSM) are used in systems of thermal protection of elements of power plants [1][2][3]. In the operation of HSM at high temperatures in addition to conductive and convective component, radiation of the material surface makes a significant contribution to the total heat exchange.…”

Near-infrared optical properties of a porous alumina ceramics produced by hydrothermal oxidation of aluminum

“…The progress in computer engineering and numerical methods makes it possible to obtain more accurate solutions. Nevertheless, simple and physically clear differential approximations are widely used at present for solving the radiative transfer problems in scattering media, particularly in combined heat transfer problems [27,[34][35][36]. All the differential approximations for RTE are based on some assumptions concerning the angular dependence of the spectral radiation intensity.…”

The Use of Transport Approximation and Diffusion-Based Models in Radiative Transfer Calculations

“…The progress in computer engineering and numerical methods for boundary-value problems makes it possible to obtain more accurate solutions. Nevertheless, simple and physically clear differential approximations are widely used at present for solving the radiative transfer problems in scattering media, particularly in combined heat transfer problems (Öziik, 1973;Viskanta, 1982Viskanta, , 2005Rubtsov, 1984;Dombrovsky, 1996a;. All the differential approximations for RTE are based on simple assumptions concerning the angular dependence of the spectral radiation intensity I λ .…”