Numerical Solution of an Unsteady Flow Using Artificial Compressibility Method
نویسنده
چکیده
The work presents an artificial compressibility method applied to incompressible Navier-Stokes equations for steady as well as for unsteady flows. Two modifications of unsteady numerical solution by an implicit finite volume method are considered. First one uses large artificial compressibility parameter and the iterative solution approximates unsteady evolution of flow. The second approach introduces dual time (artificial time) into the system of equations, where artificial time serves as iterative time only and the second one is physical time. Later approach is found more robust and reliable. The computational results are presented for unsteady laminar flow over circular cylinder and turbulent synthetic jet flows.
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