Numerical Solution of Argon 36-38-40 Concentration Profiles within Thermal Diffusion Column
Axisymmetric concentration profiles of 3-component isotope separating thermal diffusion column with continuous feed and draw-offs were calculated by solving the convection-diffusion equations using Newton iterative method, where the flow variables were specified as input. An approximate expression of thermal diffusion coefficient in multi-component mixture in terms of binary thermal diffusion factors and binary diffusion coefficients was used for the analyses.<BR>Analytical results were compared with experimental data of 3-component natural abundance argon 36-38-40 isotopes separated in a 950 mm-height, inner 15 mmφ tube column with a 0.3 mmφ hot wire in the axis. Validity of the analyses and the approximation in the thermal diffusion coefficient was ensured by close agreement with experimental results.
- Journal of nuclear science and technology
Journal of nuclear science and technology 33(10), p.781-786, 1996-10-25
Atomic Energy Society of Japan