000			01628aab a2200217 4500
008			240116b19901990|||mr||| |||| 00| 0 eng d
022			_a0017-9310
100			_aWolf, Jeffrey R. _9879917
100			_aTseng, Josefina W.C. _9879918
100			_aStrieder, William. _9874781
245			_aRadiation Conductivity for a Random Void-Solid Medium with Diffusely Reflecting Surfaces
300			_a725-734 p.
520			_aA variational principle is formulated for radiant heat transfer through the void spaces and conduction in the solid, of an arbitrary void-solid system with diffusely reflecting surfaces. Variational upper bounds on the effective conductivity of a void-solid suspension are expressed in terms of certain averages characterizing the random geometry. A radiation conductivity upper bound, calculated for a model porous medium generated by randomly placed, overlapping spheres, is compared with well-known results from kinetic theory and radiant heat transport. The variational principle provides a means to obtain useful estimates and upper bounds on the thermal radiation conductivity, that include multiple and anisotropic diffusive scattering in a bed of large particles.
650			_aRadiation Conductivity _9879919
650			_aRandom Void _9879920
650			_aSolid Medium _9879921
650			_aDiffusely Reflecting Surfaces _9879922
773	0		_x00179310 _tInternational Journal of Heat and Mass Transfer _dNew York, U.S.A : Pergamon Subsidiary of Elsevier Science & Technology
856			_uhttps://www.sciencedirect.com/science/article/pii/001793109090170Y
942			_2ddc _n0 _cART _o14993 _pMr. Muhammad Rafique Al Haj Rajab Ali (Late)
999			_c814724 _d814724