عنوان مقاله [English]
The performance of a uranium gas centrifuge used in the uranium enrichment industry depends strongly on the gas flow field. In order to examine gas flow field, it is necessary to computer simulation. Therefore, in this study, the capabilities of OpenFoam software for simulating gas flow inside the rotor for total reflux thermal drive in axisymmetric mode have been investigated. OpenFoam simulation results has been validated with analytical results of Olander’s model, numerical solution of the Harada’s study and Fluent simulation. The simulation results for gas flow inside the rotor of centrifuge showed that density based solver was properly chose and the numbers of cell 160*170 was compatible with mesh. Numerical results demonstrated OpenFoam software was capable to examine the gas flow inside the rotor. Also, the simulation of the distribution of knudsen number confirms the presence of the molecular region in the near the axis of rotation. OpenFoam is open source software, there is the ability to solve the molecular region as well as the coding for coupling the continuous and molecular region, while this feature does not exist in the fluent software. Therefore, the use of open foam is recommended to simulate gas flow inside the rotor.