Abstract:
The subject of this research is a chemical reactor for producing tungsten. A physical and
mathematical model of fluid flow and heat transfer in the chemical reactor under forced and free
convection has been described and developed by two methods. The numerical simulation was
carried out using “vortex–stream function” and “velocity–pressure” variables. The velocity and
temperature distribution in reactor were obtained. The parametric studies of the effect of the
Reynolds, Prandtl, and Rossby criteria on the flow characteristics were also performed. The
graphs presented show that the natural convection has a significant impact on the flow
hydrodynamics and intensifies the heat transfer.
The reliability of the calculations was verified by comparing the results obtained by the
methods mentioned above. Furthermore, the created model was applied for numerical solving of
a classical test problem of velocity distribution in an annular channel and that of the rotating
infinite disk in a stationary liquid. The research results are in a good agreement with the analytical
solutions.
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