Almaty, Kazakhstan

Al-Farabi Kazakh National University , also called KazGU or KazNU, is a university in Almaty, Kazakhstan. Named after the Muslim scholar al-Farabi, it is the country's primary and largest university.KazNU is the oldest classical university of the Republic established by the Decree of the Kazakh Regional Committee office dated November 13, 1933. One year after Kazakhstan's 1990 declaration of independence, the name was changed to Al-Farabi Kazakh State University. In 2001, the government classified it as a "national" university. More than 20000 students, graduates and PhD students study at KazNU, and there are more than 2500 faculty members working at KazNU, including 400 doctors of science, professors and more than 800 candidates of science and associate professors. Like other universities founded under the Soviet system, it is highly centralized. Wikipedia.


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Issakhov A.,Al-Farabi Kazakh National University
AIP Conference Proceedings | Year: 2012

This paper presents the mathematical model of the thermal power plant influence in the aquatic environment, which is solved by the Navier - Stokes and temperature equations for an incompressible fluid in a stratified medium. Numerical algorithm based on the method of splitting by physical parameters with combination of Fourier method for Poisson equation. © 2012 American Institute of Physics.


Issakhov A.,Al-Farabi Kazakh National University
Scientific World Journal | Year: 2014

This paper presents the mathematical model of the thermal process from thermal power plant to aquatic environment of the reservoir-cooler, which is located in the Pavlodar region, 17 Km to the north-east of Ekibastuz town. The thermal process in reservoir-cooler with different hydrometeorological conditions is considered, which is solved by three-dimensional Navier-Stokes equations and temperature equation for an incompressible flow in a stratified medium. A numerical method based on the projection method, divides the problem into three stages. At the first stage, it is assumed that the transfer of momentum occurs only by convection and diffusion. Intermediate velocity field is solved by fractional steps method. At the second stage, three-dimensional Poisson equation is solved by the Fourier method in combination with tridiagonal matrix method (Thomas algorithm). Finally, at the third stage, it is expected that the transfer is only due to the pressure gradient. Numerical method determines the basic laws of the hydrothermal processes that qualitatively and quantitatively are approximated depending on different hydrometeorological conditions. © 2014 Alibek Issakhov.


Nikolajev G.V.,Al-Farabi Kazakh National University
Paleontological Journal | Year: 2010

A new genus and species, Protanaides sibiricus gen et sp. nov., of the subfamily Anaidinae (family Hybosoridae) from the Lower Cretaceous Baisa locality in Transbaikalia is described. This find adds considerably to knowledge of the diversity of this subfamily in the Mesozoic of Asia and gives evidence of the relict status of the Recent Anaidinae. © 2010 Pleiades Publishing, Ltd.


Sapargalieva N.S.,Al-Farabi Kazakh National University
Russian Journal of Biological Invasions | Year: 2015

The Aksu River is one of the main rivers of Zhetysu (Seven Rivers) and flows into Lake Balkhash. The current ichthyofauna of the Aksu River is represented by seven indigenous and eleven alien species. The largest number of alien fish species are noted on a large part of the piedmont and estuary river sections. The structure and species composition of river fish populations have changed over the last 20 years. The Chinese false gudgeon Abbottina rivularis and the Siberian dace Leuciscus baicalensis have appeared in it, and the former has reached a substantial abundance. The species structure of fish populations in the piedmont part is extremely unstable and depends on its hydrological regime. © 2015, Pleiades Publishing, Ltd.


Kakimzhanov Y.H.,Al-Farabi Kazakh National University
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM | Year: 2014

The article usses the principles of drawing up the soil-geomorphological and landscape maps in adaptive landscape system of agriculture (ALSA) of northern slope of the Ili Alatau mountains by using GIS technology. Currently topical issue of fundamental change in the process of formation of agronomic solutions through the introduction of environmentally sustainable farming systems with extensive involvement of the capabilities of modern techniques and technologies, including geographic information systems and computer technology. The system is held in Kazakhstan as a territorial analysis of the classification categories of landscapes and issue of soil, geomorphological and landscape map by using GIS technology to create adaptivelandscape system of agriculture. In this case, the methodological approach the use of GIS technology. © SGEM2014.


Issakhov A.,Al-Farabi Kazakh National University
International Journal of Nonlinear Sciences and Numerical Simulation | Year: 2015

The paper presents a mathematical model of the thermal load on the aquatic environment under operational capacity 200 MW of thermal power plant. It is solved by the Navier-Stokes and temperature equations for an incompressible fluid in a stratified medium based on numerical method, the splitting method by physical parameters which approximated the finite volume method. The numerical solution of the equation system is divided into four stages. At the first step it is assumed that the momentum transfer is carried out only by convection and diffusion. Intermediate velocity field is solved by the five-step Runge-Kutta method. At the second stage, the pressure field is solved by the intermediate velocity field. Poisson equation for the pressure field is solved by Jacobi method. The third step is assumed that the transfer is carried out only by pressure gradient. The fourth step of the transport equation for temperature is also solved as momentum equations, with five-step Runge-Kutta method. The obtained numerical results of temperature distribution for operational capacity of 200 MW of three-dimensional stratified turbulent flow were compared with experimental data, which revealed qualitatively and quantitatively approximately the basic laws of hydrothermal processes occurring in the reservoir-cooler. © 2015 by De Gruyter.


Issakhov A.,Al-Farabi Kazakh National University
International Journal of Nonlinear Sciences and Numerical Simulation | Year: 2014

Zonal RANS/LES modelings have received considerable attention over recent years. Especially with the attached boundary layers that computed using the Reynolds- averaged Navier - Stokes (RANS) equations, and non-equilibrium zones of the flow by large-eddy simulation (LES). Generation eddies from a smooth RANS field of turbulent eddies capable of supporting the Reynolds stresses in the LES zones are one issue that may affect the accuracy of the results of zonal methods. Synthetic turbulence and controlled forcing are used to generate turbulence structures in the LES zones.


This paper presents the mathematical model of the thermal power plant in cooling pond under different meteorological conditions, which is solved by three dimensional Navier-Stokes equations and temperature equation for an incompressible fluid in a stratified medium. A numerical method based on the projection method, which divides the problem into three stages. At the first stage it is assumed that the transfer of momentum occurs only by convection and diffusion. Intermediate velocity field is solved by method of fractional steps. At the second stage, three-dimensional Poisson equation is solved by the Fourier method in combination with tridiagonal matrix method (Thomas algorithm). At the third stage it is expected that the transfer is only due to the pressure gradient. The compact scheme was used to increase the order of approximation. Then the basic laws of the hydrothermal processes depending on different hydrometeorological conditions were determined qualitatively and quantitatively approximate. © 2013 Springer International Publishing Switzerland.


Issakhov A.,Al-Farabi Kazakh National University
Journal of Physics: Conference Series | Year: 2011

Parallel implementation of algorithm of numerical solution of Navier-Stokes equations for large eddy simulation (LES) of turbulence is presented in this research. The dynamic Smagorinsky model is applied for sub-grid simulation of turbulence. The numerical algorithm was worked out using a scheme of splitting on physical parameters. At the first stage it is supposed that carrying over of movement amount takes place only due to convection and diffusion. Intermediate field of velocity is determined by method of fractional steps by using Thomas algorithm (tridiagonal matrix algorithm). At the second stage the determined intermediate field of velocity is used for determination of the field of pressure. Three dimensional Poisson equation for the field of pressure is solved using over relaxation method.


Mazhitova A.D.,Al-Farabi Kazakh National University
Journal of Dynamical and Control Systems | Year: 2012

In this paper we study geodesics of a left-invariant sub-Riemannian metric on a three-dimensional solvable Lie group. A system of differential equations for geodesics is derived from Pontryagin maximum principle and by using Hamiltonian structure. In a generic case the normal geodesics are described by elliptic functions, and their qualitative behavior is quite complicated. © 2012 Springer Science+Business Media, Inc.

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