Abstract
Computations of unsteady incompressible flows are carried out using the three-dimensional unsteady Navier-Stokes equations. Space discretization of the equations is achieved by a finite-difference method in a generalized coordinate system. To an explicit time discretization is added an implicit smoothing technique. The pressure equation is solved by minimizing a discrete norm of the velocity divergence. The method is applied to study the flow around an impulsively started circular cylinder.
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