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Publications (3)0 Total impact

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    ABSTRACT: The infrastructure of the MARPLE 3D software oriented on radiation plasmodynamic problems with dissipation in medium and transfer of radiant energy is described. Examples of its applications, like investigation of compression of the current-carrying plasma by self-magnetic field, are brought.
    Matematicheskoe Modelirovanie. 01/2012; 24(1).
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    ABSTRACT: The subject of this paper is the computer simulation of transient processes in strongly radiative plasma, that refers to solving the problems of radiative magnetohydrodynamics. The program system MARPLE developed in IMM RAS is described, where the application of OOP and parallel computing is emphasized. The strategy and scheme of code parallelizing are explained, with the outcome being presented in the results of practical computations.
    Parallel Computing: Architectures, Algorithms and Applications, ParCo 2007, Forschungszentrum Jülich and RWTH Aachen University, Germany, 4-7 September 2007; 01/2007
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    ABSTRACT: Modern problems in pulsed-power energetics issue a real challenge to the computer simulation theory and practice. High-performance computing is a promising technology for modeling complex multiscale nonlinear processes such as transient flows of strongly radiative multicharged plasmas. An essential part of such numerical investigation is devoted to the computer simulation of pinches resulted from electric explosion of cold matter, such as gas-puff jets, foam strings, or metallic wire arrays. The goal of numer-ical research in pulsed-power is to study the evolution of very intensive transient electric discharges and to perform a multiparametric optimization of future experimental schemes. These problems are known to be computationally very hard, so using high-performance computing is of great demand in the field. In this work the use of different approaches in parallel computing is considered in relation to radiative hydrodynamics simulation problems. Among the most common parallel techniques for gasdynamics, hydrodynamics, and MHD in particu-lar, numerical modeling on spatial meshes is the traditional geometric domain decomposition. At this, certain specificity of introducing parallelism into a complete program complex in our case relates to the object-oriented nature of MARPLE code, developed in IMM RAS and designed for numerical radiative magnetohydrodynamics simulation, which essentially employs C++ language facilities, such as poly-morphism, encapsulation, inheritance, and parametric programming. Special data structures based on the concept of topological complex have been elaborated to provide problem statement in an arbitrary domain, and for handling unstructured meshes, including dynamic mesh changes. Some of these struc-tures have to be adapted to allow for parallel computations and data exchanges, taking into account the requirement of keeping interprocessor communication adequately small.