01.00.00 Physical-mathematical sciences
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TURBULENCE THEORY AND ROUGHNESS DENSITY EFFECT MODEL
01.00.00 Physical-mathematical sciences
DescriptionThe model of the turbulent boundary layer over a rough surface is presented. The model is based on the special type of transformation of the Navier-Stokes equation. The turbulent boundary layer in this model is considered as a flow above the rough surface gener-ated by the viscous sublayer (the dynamic roughness effect). The roughness density effect on the shift of the mean velocity logarithmic profile has been estimated in the case of 2D and 3D roughness elements
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THEORY OF TURBULENCE AND SIMULATION OF TURBULENT TRANSPORT IN THE ATMOSPHERE PART 5
01.00.00 Physical-mathematical sciences
DescriptionNumerical solutions of equations system of turbulent transport of admixtures in a surface layer of the atmosphere and for a large scale have been studied
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SYNERGETIC METHOD IN THE COGNITION OF MICRO- AND MACRO PHENOMENA: THE EVOLUTIONARY PICTURE OF NATURE
01.00.00 Physical-mathematical sciences
DescriptionThis article reveals a relevant idea of the evolution-al character of modern science. The validity of the unity of nature idea is shown on the concrete cos-mology and physics data. The work unites the con-ceptions of evolution and self-organization. The universe is seen as a dissipative system with period-ically removable elements (elementary dissipative systems). The cooperative evolution presupposes the presence of the circulation between the macro - and micro components of the evolving system as well as the growing complication of the evolution branches. It is stated that the fundamental role in the development of sciences about nature is played by outward factors, i. e. the common cultural back-ground and the cognition development level. At the same time, of a great methodological interest is the disclosure of the internal stimulating motives of development and the interconnection of the devel-opment stages of natural sciences
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01.00.00 Physical-mathematical sciences
DescriptionIn the article general mathematical expression for a quantitative assessment of system (synergetic) effect, arising when integrating buleans (systems), being a generalization of sets in system generalization of the theory of varieties and independent of an expedient (algorithm) of formation of subsystems in system is offered. For this quantitative standard the name is offered: «Generalized coefficient of emergence by R.Hartli» because of likeness of its mathematical shape to the local coefficient of emergence of Hartli, reflecting a degree of difference of system from the variety of its base devices. For local coefficient of emergence of Hartli, the generalization independent of an expedient (algorithm) of formation of subsystems in system is offered. Numerical estimates of system's effect are given at integrating of two systems with ap-plication of the author's program to which the refer-ence is given
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MODELS OF NEURONET INFLATION IN RUSSIA
01.00.00 Physical-mathematical sciences
DescriptionThe article’s conclusion is that for adequate and effective inflation modeling in Russia by means of modern neuronet technologies it is necessary to consider tendencies of economic development. For training and forecast, it is necessary to use only those periods of time within the limits of which identical economic tendencies work. The article uses modern tool means, such as neuronet, which is offered to technology, for approximation and forecasting of rates of inflation
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ABOUT SHAPING THE THERMAL RADIATION IN OPTICALLY TRANSPARENT SOLID OBJECTS
01.00.00 Physical-mathematical sciences
DescriptionIt has been experimentally proven that thermal radiation of optically transparent solid objects forms from the entire heated volume within the spectral frequency that is allowed to pass through
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01.00.00 Physical-mathematical sciences
DescriptionDependence of the Earth polar motion on celestial bodies’ positions is examined on the basis of semantic information models
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THEORY AND CONSTANTS OF WALL TURBULENCE
01.00.00 Physical-mathematical sciences
DescriptionThe completely closed model of wall turbulence was derived directly from the Navier-Stokes equation. The fundamental constants of wall turbulence including the Karman constant have been calculated within a theory. This model has been developed also for the accelerated and non-isothermal turbulent boundary layer flows. The estimated mean velocity, temperature and impurity concentration profiles as well as the spectral characteristics of the streamwise velocity component are to be shown in a good agreement with the experimental data
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THEORY OF TURBULENCE AND SIMULATION OF TURBULENT TRANSPORT IN THE ATMOSPHERE PART 4
01.00.00 Physical-mathematical sciences
DescriptionThe completely closed model of wall turbulence was derived directly from the Navier-Stokes equation. The fundamental constants of wall turbulence including the Karman constant have been calculated within a theory. This model has been developed also for the accelerated and non-isothermal turbulent boundary layer flows over rough surface
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SIMULATION OF TURBULENT TRANSPORT IN THE ATMOSPHERE PARTS 1, 2
01.00.00 Physical-mathematical sciences
DescriptionThe completely closed model of wall turbulence was derived directly from the Navier-Stokes equation. The fundamental constants of wall turbulence including the Karman constant have been calculated within a theory. This model has been developed also for the accelerated and non-isothermal turbulent boundary layer flows over rough surface. Numerical solutions of equations system of turbulent transport of admixtures in a surface layer of the atmosphere for a large scale have been studied