Numerical solution of 2D viscous fluid dynamics problems using finite volume method (FVM) on triangular grid

In present work the algorithm for solving 2D steady viscous fluid flow problems using FVM on triangular grid has been developed. The method of extrapolation of unknowns to the boundary has been presented. This method allowed us to avoid using hybrid meshes, containing quadrangles near the boundary, and restrict ourselves to applying only triangles, that made the algorithm uniform and practically feasible. Some testing problems such as backward facing step flow and lid-driven cavity flow have been presented.