THE INFLUENCE OF MORPHOLOGY UPON 2-TEMPERATURE STATEMENTS FOR CONVECTIVE-TRANSPORT IN POROUS-MEDIA

Transport models for forced, single phase fluid convection are reviewe d for non-uniformly and randomly structured highly porous media. Speci al attention is given to the evaluation of a two-temperature energy mo del. For means of comparison, a one-temperature, effective thermal dif fusivity model-is developed emphasizing local solid phase morphology u sing analytic techniques. Random characteristics of the porous medium are simulated by the use of regular and unspecified, pre-assigned soli d phase morphologies. An overall coefficient of drag resistance is det ermined by implementing a multiple-regime superposition approach. Coef ficient models ale evaluated using the governing averaged transport eq uations set and solved numerically. Variability of the morphology desc riptors is shown to potentially govern large fluctuations in transport parameter values and distributions. Results generally compare favorab ly among work by Koch and Brady; Fand and Thinakaran; Adnani, Raffray, Abdou, and Catton; and Watanabe.