Three dimensional gas diffusion with specie and geometrical generality
Guy, Walter William
Chapman, Alan J.
Master of Science
The analytical research accomplished, and reported herein, includes the development of a computerized analytical technique for evaluating certain aspects of the gas diffusion phenomena normally evident in spacecraft. This technique has the flexibility to incorporate complete specie and geometrical generality, as well as a significant latitude in the selection of boundary conditions. Subsequent to the development, a situation was evaluated to demonstrate the versatility of the analysis method. Additionally, several general cases were analyzed with representative classes of geometry and boundary condition definitions; and the data is presented in non-dimensionalized form. The geometric configurations evaluated were the cube, rectangular parallelepiped, and dumbbell; the boundary conditions considered were impervious surfaces, controlled concentration areas, and mass production/removal source/sink locations. The purpose of the included data assemblage is to provide a quick method of evaluating the gas diffusion phenomena in situations which can be approximated by the "regular" geometries and source/sink proximity relationships considered.