Site: Institute of Computational Technologies
Russian Academy of Sciences, Siberian Branch
Ac. Lavrentiev Ave., 6
Novosibirsk, 630090, Russia
Date Visited: October 30, 1995
R. Blidberg (report author), S. Chechin, M. J. DeHaemer, J. Moniz
Academician Yurii Shokin
Prof. Victor M. Kovenya
Prof. Anatolii Fedotov
Dr. Sergey Golushko
The institute has a staff of 120 people working in 12 laboratories. Their applied [i.e., military] work has now almost stopped. They are now adapting their developed software to other applications.
The department has four laboratories:
Laboratory for Numerical Analysis -- Dr. Gayaz Khakimzyanov, Head
This laboratory deals with the development of the theory of difference schemes, algorithms for numeric solution of the problems of continuum mechanics, and relevant applied software development. The primary focus is on the development of adaptive grids for 3D models of hydrodynamic processes.
Laboratory for Modeling of Wave Processes -- Dr. Boris Chubarov, Head
Research in this laboratory mostly concerns the development of algorithms for the numerical modeling of the transformation of long surface gravitational waves on the water surface. Special attention is paid to nonlinearly dispersive approximations of shallow water theory. Several different models were discussed. The first was a simulation of a tsunami: its travel time and wave amplitude were predicted by introducing data describing a number of parameters associated with the initial event (Chubarov 1992). The resulting surface waves were displayed on a PC.
Laboratory for Modeling of Atmospheric Processes -- Prof. Gdalii Rivin, Head
This laboratory deals with the solution of mathematical problems associated with the time and space reconstruction of "meteoelements fields" based on observational data from direct and indirect probing of the atmosphere, i.e., the development of numerical methods for analysis of meteorological data, initialization, atmospheric models and "meteofields" visualization.
Laboratory of Interval Analysis -- Dr. Valerii Kobkov, Head
Broad classes of numerical algorithms for optimal solution of "external problems" for the interval linear algebraic system (PSS and PPS algorithms) have been developed. A complete "technological chain" has been developed to solve the linear problems of tolerances -- a generalized stabilization problem -- for interval linear static problems.
The department has five laboratories with a total of 30 researchers.
Laboratory of Computational Aerodynamics -- Dr. Sergey Cherny, Head
This laboratory mostly works on the development of effective numerical algorithms for the solution of aerodynamics problems and their application to different spheres of science and technology. The focus is on aircraft modeling problems, such as modeling internal flow in turbines. Models simpler than Navier-Stokes are used, since the lab has limited computational capability. A demonstration was run representing the internal flow in a turbine. It represented the calculation of 30,000 points in that flow.
Laboratory of Computational Hydrodynamics -- Gennadii G. Chernykh, Head
This laboratory mostly does research on solutions properties of equations with sign-changing viscosity coefficients, construction of projectional grid solution methods for elliptical and parabolic problems with the interval and boundary layers, and numerical modeling of flows of incompressible fluids. Although they originally studied turbulence in ships' wakes, they are now investigating free turbulence using semi-empirical models of turbulence.
Laboratory of Plasma Physics -- Galina Dudnikova, Head
This laboratory primarily investigates non-stationary processes and cosmic plasma using several different levels of numerical models (MGD, kinetic, hybrid) and dimensionality (1D, 2D, 3D) developed in the lab. The researchers are using approximation techniques to investigate problems such as the Boltzman model for semiconductors. They are also using this technique to look at hydrodynamics problems. One simulation was shown utilizing a 486-type PC that modeled plasma flow. This was a hybrid model using several approximations and a technique of splitting the problems into simpler pieces, then recombining the results to obtain a 3D model. A simulation was run of a laser pulse hitting a plasma bubble. The kinetic equations of the interaction of one million particles have been represented.
Laboratory of Statistical Models and Methods -- Prof. Yurii Grigoriev, Head
This laboratory specializes in research on statistical models of rarefied gas, hydrodynamic turbulence, and coagulation theory. A demonstration was shown in which a gas jet and the control of that jet were simulated over time.
Laboratory of Computational Physics -- Prof. Grigorii Gagiyak, Head
This laboratory's work can be divided into five areas:
Laboratory of Information and Telecommunications
The Laboratory of Information and Telecommunications provides a communication network for research, data banks, and data analysis in support of all the institutes at Akademgorodok. An effort is underway to implement Internet access for these institutes via the Moscow backbone. This project will include networking all of the institutes to a central location in Akademgorodok, then to Novosibirsk, then to Moscow via satellite link.
Laboratory of Data Analysis
Laboratory of Systems Support of Fundamental Research
This organization provides software services to the research institutes. The laboratory is setting up a number of services for the research community as summarized below:
Chubarov, L. B., et al. 1992. "Using numerical modeling to evaluate tsunami hazard near Kuril Island." Natural Hazards 5; 293-318. Kluwer Publications, Netherlands.