...Daniel W. Mackowski; Michael I. Mishchenko An analysis of radiative emission and radiative exchange among an ensemble of closely spaced, wavelength-sized spheres, in which each sphere in the ensemble is at a distinct and uniform temperature, is presented. We show that the rate of spectral emission...

...Stanley J. Kleis; Ivan Rivera-Solorio The problem of unsteady mass transfer from a sphere that impulsively moves from rest to a finite velocity in a non-uniform concentration distribution is studied. A range of low Reynolds numbers (Re<1) and moderate Peclet numbers (Pe ranges from 5.6 to 300...

...G. Buonanno; A. Carotenuto, Prof. Mem. ASME; G. Giovinco; N. Massarotti The upper and lower bounds of the effective thermal conductivity of packed beds of rough spheres are evaluated using the theoretical approach of the elementary cell for two-phase systems. The solid mechanics and thermal...

... χ = nondimensional tube distance Φ = frequency (percent) of microcapsule diameters ω = angular velocity of sphere, s −1 Subscripts B = drag force of sphere, Pa C = mass concentration of plural PCM particles in the PCM...

...Roge´rio Lopes; Luı´s M. Moura; Dominique Baillis; Jean-Franc¸ois Sacadura Directional spectral emittance of an absorbing and scattering isothermal system of packed spheres is predicted by a radiative model based on the discrete ordinates method. Radiative properties for the bed of packed opaque...

... June 21, 2000. Associate Editor: J. P. Gore. 23 September 1999 21 June 2000 thermal conductivity cooling drops heat transfer convection Droplet Heating Heat Transfer Spheres Sprays Thermal Newton's law of cooling gives the expression for convective heat flux...

...N. Shahcheraghi; H. A. Dwyer Flow and unsteady heat transfer around a moving and rotating sphere is considered as it passes through the thermal entrance region of a heated pipe. The flow is incompressible and viscous with constant properties, and the heated pipe wall is kept at a constant...