Effcient flow simulation on high performance computers

In the last decades, tremendous progress has been made in the area of numerical methods and computer technology. This article gives an introduction to the recent lattice Boltzmann method for simulating the flow of incompressible fluids and shows its application to study the flow in the complex geometry of a randomly packed fixed bed reactor. In addition, general aspects of high performance computing are addressed, e.g. the efficient handling of large amounts of data produced during time-dependent simulations, the performance of recent commodity off-the-shelf (COTS) high performance computers and optimization strategies for them. Finally, the concept of the Federal State of Bavaria for the promotion of high performance techniques is summarized.

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