Analysis of errors of multiblock computational technologies by the example of calculating a circulation flow in a square cavity with a moving cover at Re = 103

The errors of multiblock computational technologies realized in different versions of the VP2/3 package and involving the use of structured computational meshes of the H and O types with superposition were methodically investigated by the example of solving the problem on a circulation flow of an incompressible viscous fluid in a square cavity with a moving cover at a moderate Reynolds number of ~103. A comparison of the numerical estimations of the integral and extremum local characteristics of the indicated flow, made with the use of composite and multiblock meshes with varying densities and near-wall steps, has shown that it is reasonable to use multiblock computational technologies with linear interpolation in the calculations with conversion of parameters from mesh to mesh.