Improvement of the technique for tree-dimensional calculation of hydrodynamics in the flow channel of nuclear reactor in the (r, φ, z)-geometry

The preprint deals with the development of an effective numerical method of solving hydrodynamics equations for viscous and porous liquid flows. Two methods are proposed for achieving differential approximation of pulse transfer equations, which are based on the utilization of their nondivergent forms. Two nondivergent differential schemes are produced for a 3 D system of hydrodynamic equations in the cylindrical (r, φ, z) geometry, which differ in the form of convective member approximations. 1 ref., 7 figs