A hybrid vortex-ADI solution for flows of low viscosity

摘要: Abstract A hybrid numerical scheme is presented for use on two-dimensional, incompressible flows of low viscosity. The divides the domain D into two regions, D1 and D2, Navier-Stakes equations are solved by different methods in each. In region D1, which composed a narrow strip adjoining boundary, grid-free vortex method used. An alternating direction implicit (ADI) used interior D2 contains that part lies short distance away from boundary. allows vorticity exchange between regions partially merging realigning them. Boundary conditions automatically treated method. Favorable results have been obtained problem recirculating flow square cavity Reynolds numbers 400 1000.