NEW APPROACH TO SOLUTION OF THE RADIANT TRANSPORT-EQUATION

A new approach based on a new method for the angular approximation of radiation intensity is described. In the proposed method, the radiant equation is satisfied in the mean over each elementary cell of the ang ular partition of a sphere while the radiant intensity in each cell is given by an expression analogous to the P-1 approximation. The main n ovelty of the approach consists in the method of sphere partition, whi ch permits an essential simplification of the resulting equations and increases the accuracy of the obtained solution by taking into account specific peculiarities of the problems under consideration. The high efficiency of the method is illustrated by example solutions for diffe rent one-dimensional test problems. (C) 1997 Elsevier Science Ltd.