Implicit Iterative Schemes for Solving Stationary Problems of an Incompressible Fluid with a Large Margin of Stability
Abstract
This paper is devoted to construction and investigation of difference schemes for equations that describe the motion of a viscous incompressible fluid in natural "velocity-pressure vector" variables. Much attention is given to the implicit difference iterative schemes developed on the basis of the "weak compressibility" idea.
Mathematical problems arising in the study of viscous incompressible fluid motion are of current importance both in the theoretical plan and in the study of specific models used in mechanics, physics, and other natural sciences to describe real processes. The processes associated with the flow of a viscous incompressible fluid are successfully described by the Navier — Stokes equations. These systems of equations are nonlinear and do not belong to the evolutionary Cauchy — Kovalevskaya type. The absence of a boundary condition for the pressure on solid walls of the region under consideration, where the values for the velocity vector components and the small parameter for the higher derivatives are given, also lead to technological difficulties. These circumstances certainly complicate the search for analytical solutions of such systems of equations, and, with the current state of mathematics, they can be solved only by computational methods.
DOI 10.14258/izvasu(2018)1-14
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