Marco Kupiainen

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In this paper, we present an unsplit method for the time-dependent compressible Navier-Stokes equations in two and three dimensions. We use a a conservative, second-order Godunov algorithm. We use a Carte-sian grid, embedded boundary method to resolve complex boundaries. We solve for viscous and conductive terms with a second-order semi-implicit algorithm.(More)
We present a procedure for constructing Summation-by-Parts operators with minimal dispersion error both near and far from numerical interfaces. Examples of such operators are constructed and compared with a higher order non-optimised Summation-by-Parts operator. Experiments show that the optimised operators are superior for wave propagation and turbulent(More)
We present an Embedded Boundary Cartesian Grid method to set Dirichlet, Neumann and extrapola-tion boundary conditions for the compressible Navier-Stokes equations in two-and three dimensions. Of great interest is the coupling LES/wall-model/embedded boundary for simulating compressible flow applications. The main challenge with the embedded boundary method(More)
Experiences from using a higher order accurate finite difference multi-block solver to compute the time dependent flow over a cavity is summarized. The work has been carried out as part of a work in a European project called IDIHOM in a collaboration between the Swedish Defense Research Agency (FOI) and University of Linköping (LiU). The higher order code(More)
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