A parallel solver for unsteady incompressible 3D Navier–Stokes equations

We describe some algorithms and software components that allow us to solve on parallel computers classical test cases for unsteady incompressible 3D Navier–Stokes equations. Our main focus is the design of robust and efficient parallel solvers for systems with singularly perturbed convection–reaction–diffusion and Laplace operators, which are important constituents of the Navier–Stokes solvers. The performance of the solvers on two parallel computers is examined.