The CONV-3D code for DNS CFD calculation

The CONV-3D code for DNS CFD calculation of thermal and hydrodynamics on Fast Reactor with use of supercomputers is developed. This code is highly effective in a scalability at the high performance computers such as ``Chebyshev'', ``Lomonosov'' (Moscow State University, Russia), Blue Gene/Q(ALCF MIRA, ANL). The scalability is reached up to 10$^{6}$ processors [1]. The code was validated on a series of the well known tests in a wide range of Rayleigh (10$^{6}$-10$^{16}$) and Reynolds (10$^{3}$-10$^{5}$. Such code was validated on the blind tests OECD/NEA of the turbulent intermixing in horizontal subchannels of the fuel assembly at normal pressure and temperature (Matis-H), of the flows in T-junction and the report IBRAE/ANL was published [2]. The good coincidence of numerical predictions with experimental data was reached, that specifies applicability of the developed approach for a prediction of thermal and hydrodynamics in a boundary layer at small Prandtl that is characteristic of the liquid metal reactors.\\[4pt] [1] V.V. Chudanov et al. The national supercomputer forum (NSCF-2013). Pereslavl-Zalesskii, 26-29 November, 2013.\\[0pt] [2] A.V. Obabko, P.F. Fischer, et al. ISBN 978-953-51-0987-7, Published: February 13, 2013 under CC BY 3.0 license. DOI: 10.5772/53143. 2013.