ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ ЗАКРУЧЕННЫХ ТЕЧЕНИЙ С ОТРЫВНЫМИ ЗОНАМИ
ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ ЗАКРУЧЕННЫХ ТЕЧЕНИЙ С ОТРЫВНЫМИ ЗОНАМИ
DOI:
https://doi.org/10.22337/2587-9618-2026-22-1-65-73Ключевые слова:
закрученные течения, коаксиальные потоки, метод конечных разностей, рециркуляционные зоны, распад вихря, эффективные параметрыАннотация
A numerical study of axisymmetric viscous swirling flows of fluid was carried out at moderate Reynolds numbers. The mathematical model is based on the use of the complete Navier-Stokes system equations, written in terms of the stream function, vorticity and azimuthal velocity variables. Boundary value problems for flows with different configurations are formulated. The numerical solution is carried out by the finite-difference relaxation method using the Leonard scheme of the third order of accuracy for approximating the convective terms in the transport equations and the method of incomplete reduction for solving the Poisson equation. The flow streamlines and velocity distribution patterns were obtained. The results are compared with available experimental data. The possibility of using the obtained results for the analysis of turbulent flows by introducing effective parameters is considered.
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