VALUATION OF PARAMETERS FOR THE MIGRATION OF COMPONENTS IN THE GAS SYSTEM OBTAINED BY USING COLUMN EXPERIMENTS

Parameters for the migration of components in the gas system become molecular diffusion and Knudsen diffusion with tortuosity and dipersivity. Hibi et al. developed the method for obtaining these parameters by using column experiments in the previous study. Tank experiments and numerical simulation were conducted in the present study for verifying that values obtained by using the column experiments were adequate. Carbon dioxide was injected in to the tank filled dry Toyoura sand or soil mixed Toyoura sand with bentonite, in where these parameter were obtained, and gas adjusting components of oxygen and nitrogen. The numerical simulation was carried out by using the simulator with Dusty gas model and characteristic finite element scheme and by employing the parameters obtained by the column experiments in the previous study. Therefore it was found in this study that these parameters were adequate.