TY - CHAP A1 - Deiterding, Ralf T1 - Object-oriented design of an AMR-algorithm for distributed memory computers N2 - The design of an object-oriented framework for the blockstructured Berger-Oliger AMR-method is presented. It simplifies the definition of concrete applications and allows a natural formulation of the parallel AMR-algorithm. A distribution strategy especially tailored for AMR is described. Gas dynamical computations of instabilities of the Kelvin-Helmholtz type in two and three space dimensions are employed to demonstrate the efficiency of the approach. KW - Adaptive mesh refinement KW - Parallelization KW - Inviscid flows KW - Kelvin-Helmholtz instability Y1 - 2000 UR - http://www.csm.ornl.gov/~r2v/pub/hyp2000_proc.pdf SP - 10 S. ER - TY - RPRT A1 - Deiterding, Ralf T1 - Simulation of a shock tube experiment with non-equilibirum chemistry N2 - The ignition process of a hydrogen-oxygen-argon mixture in a shock tube is simulated. The document describes a reactive test case of the DFG high priority research program "Analysis und Numerics of Conservation laws". KW - Detonation KW - Supersonic combustion KW - Inviscid reactive flows Y1 - 2000 UR - http://www-ian.math.uni-magdeburg.de/anume/testcase/bader/H2O2tubedet/H2O2tubedet_e.html CY - Cottbus ER - TY - RPRT A1 - Deiterding, Ralf T1 - Simulation eines Stoßrohrexperiments mit Nichtgleichgewichtschemie N2 - Der Entzündungsvorgang eines Wasserstoff-Sauerstoff-Argon-Gemisches in einem Stoßrohr wird simuliert. Das Dokument beschreibt einen reaktiven Testfall der DFG-Schwerpunktprogramms "Analysis und Numerik von Erhaltungsgleichungen". KW - Detonation KW - Supersonische Verbrennung KW - Numerische Simulation Y1 - 2000 UR - http://www-ian.math.uni-magdeburg.de/anume/testcase/bader/H2O2tubedet/H2O2tubedet.html CY - Cottbus ER - TY - CHAP A1 - Deiterding, Ralf T1 - Accurate Simulation of Rayleigh-Taylor instabilities T2 - Proceedings, Colloquium Fluid Dynamics '99, Prague, 19 - 20.10.1999 N2 - We derive a modification of the wave propagation proposed by R. J. LeVeque to accurately capture the behaviour of quasi-steady flows to the case of the Euler equations undergravitational influence and apply it to flows of two nonmixing ideal gases. We present results of a numerical simulation of the behaviour of an instable interface between two gases driven by the standard gravitational field (Rayleigh-Taylor-instability). KW - Rayleigh-Taylor instability KW - Numerical methods KW - Adaptive mesh refinement Y1 - 1999 UR - http://www.csm.ornl.gov/~r2v/pub/cfd_d_prague_99.pdf SN - 80-85918-52-8 SP - 37 EP - 44 PB - Acad. of Sciences of the Czech Republic, Inst. of Thermodynamics CY - Prague ER - TY - CHAP A1 - Bader, Georg A1 - Deiterding, Ralf T1 - A distributed memory adaptive mesh refinement package for inviscid flow simulations T2 - Proceedings, Colloquium Fluid Dynamics '99, Prague, 19 - 20.10.1999 N2 - An object-oriented implementation in C++ of the Berger-Oliger adaptive mesh refinement algorithm for hyperbolic conservation laws is described. The software design is tailored especially for distributed memory super-computers. An examplary computation for the standard inviscid Euler equations is shown. KW - Adaptive mesh refinement KW - Parallelization KW - Inviscid flows KW - Numerical simulation Y1 - 1999 SN - 80-85918-52-8 SP - 9 EP - 14 PB - Acad. of Sciences of the Czech Republic, Inst. of Thermodynamics CY - Prague ER - TY - CHAP A1 - Deiterding, Ralf T1 - Efficient simulation of multi-dimensional detonation phenomena N2 - The paper presents a solution strategy for Euler equations for multiple thermally perfect gaseous species with detailed chemical reaction. Via operator-splitting a high-resolution finite-volume scheme and a stiff ODE solver are coupled. A parallel blockstructured adaptive mesh refinement algorithm is utilized to achieve the required local resolution. A highly resolved computation of regular detonation-cell patterns of the hydrogen-oxygen-argon system demonstrates the efficiency of the entire approach. KW - Unstable detonations KW - Numerical methods KW - Adaptive mesh refinement KW - Parallelization Y1 - 2002 ER -