caa a22 4500 606150684 CHVBK 20210128100540.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10512-015-9988-3 doi (NATIONALLICENCE)springer-10.1007/s10512-015-9988-3 Development of a Method of Direct Numerical Modeling of Turbulent Flows Using a Supercomputer [Elektronische Daten] [V. Chudanov, A. Aksenova, A. Makarevich, V. Pervichko, I. Romero-Reyes] A method of direct numerical modeling of turbulent flows in the elements of nuclear power setups using a supercomputer is being developed at the Institute of Problems in the Safe Development of Nuclear Energy. The method is based on developed low numerical diffusion algorithms for which discrete approximations are constructed using finite-volume and completely separated grid methods. A regularized nonlinear monotonic operator separation scheme has been developed for solving the advection problem. Richardson's iteration method with a preconditioner (i.e., a special matrix, premultiplication by which improves the convergence of the numerical method) in the form of the fast Fourier transform for the Laplace operator is used to solve the pressure equation. This approach to solving elliptic equations with variable coefficients gives multifold acceleration compared with the ordinary method of conjugate gradients. Quasi-direct numerical modeling is used to model the three-dimensional turbulent flows in single-phase flows. The method is implemented in the CONV-3D code, which is parallelized and efficient on the multiprocessor cluster computers Chebyshev and Lomonosov (Moscow State University). Springer Science+Business Media New York, 2015 Chudanov V. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut Aksenova A. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut Makarevich A. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut Pervichko V. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut Romero-Reyes I. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut Atomic Energy Springer US; http://www.springer-ny.com 118/4(2015-08-01), 247-253 1063-4258 118:4<247 2015 118 10512 https://doi.org/10.1007/s10512-015-9988-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10512-015-9988-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chudanov V. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut NATIONALLICENCE 700 1- Aksenova A. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut NATIONALLICENCE 700 1- Makarevich A. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut NATIONALLICENCE 700 1- Pervichko V. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut NATIONALLICENCE 700 1- Romero-Reyes I. Institute of Problems in the Safe Development of Nuclear Energy, Russian Academy of Sciences (IBRAE RAN), Moscow, Russia aut NATIONALLICENCE 773 0- Atomic Energy Springer US; http://www.springer-ny.com 118/4(2015-08-01), 247-253 1063-4258 118:4<247 2015 118 10512