The behavior of the velocity vorticity vector on a discontinuity surface arising in the supersonic non-uniform flow of combustible gas around a body with the formation of a shock or detonation wave is studied. The fre...
The behavior of the velocity vorticity vector on a discontinuity surface arising in the supersonic non-uniform flow of combustible gas around a body with the formation of a shock or detonation wave is studied. The free stream is generally vortical and has a given distribution of parameters. The formulas are obtained for the vorticity vector components in a special coordinate system related to the wave. It is shown that in this case the vorticity vector normal to the wave remains continuous across the discontinuity surface, and in the case of axisymmetric flows, also the quantity remains continuous, which is equal to the ratio of the tangent vorticity component to density, although the quantities themselves taken separately undergo a discontinuity.
作者：
Romashko, Roman V.School of Natural Sciences
Far-Eastern Federal University Sector of Photonics and Optical Nanometrology Institute of Automation and Control Processes FEB RAS Russia
This work considers the results of optimal harvest with constant quota in population with two age-classes. It has been analytically shown that maximum of income is not achieved under the catch from both age-classes si...
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This work considers the results of optimal harvest with constant quota in population with two age-classes. It has been analytically shown that maximum of income is not achieved under the catch from both age-classes simultaneously. It has been shown that even if catch with constant quota is carried out from one age group independently of individual genotypes the type of genetic equilibrium in population can change.
The model considering influence of non-linear effects of metabolic regulation of phytoplankton's growth has been developed and investigated in this work. It has been shown by the model that metabolites that are pr...
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The model considering influence of non-linear effects of metabolic regulation of phytoplankton's growth has been developed and investigated in this work. It has been shown by the model that metabolites that are produced by the algae are capable to stabilize the phytoplankton's growth under conditions of abundant inflow of nutrients.
Multilayer structures (up to 15 layers) with β-FeSi2 nanocrystallites (NCs) buried in silicon crystalline lattice were grown by repetition of reactive deposition epitaxy (RDE) or solid phase epitaxy (SPE) of thin iro...
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The sea surface merged charts of thermal structures in the form of dominant orientations of thermal contrasts (DOTCs) provide an information about surface circulation regularly. High correlation between DOTCs and flow...
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The sea surface merged charts of thermal structures in the form of dominant orientations of thermal contrasts (DOTCs) provide an information about surface circulation regularly. High correlation between DOTCs and flow directions makes it possible to use them for water eddy identification. A new method for automatic identification of eddies as arbitrary closed circulations is proposed. The method consists of three procedures: identification of an eddy and its center, computation of size and shape;construction of an eddy contour by minimization of DOTC "leaking" out of the contour;the analysis of constructed contours and screening off false detected objects. The main problem of the automatic eddy detection which is the possibility for generation of the false detected objects is considered. The screening algorithms are proposed, their effectiveness is demonstrated and the opportunities of automatic eddy tracing on a temporary chart sequence are estimated. The method has been tested on three month sequence of DOTC charts of Okhotsk sea region under heavy cloudy conditions.
Pulsed laser processing matures as a powerful technique for flexible and high-performing nanostructuration. Rich physics behind the light-matter interaction allows to produce unique surface nanotextures with desired p...
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The studies are devoted to the development of the technology of multilayer incorporation of nanocrystals (NCs) of semiconductor chromium and iron disilicides with a layer density no less than 2×1010 cm-2, the est...
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This paper presents the synthesis method of an effective fault tolerant control system for actuators of manipulators which are described by nonlinear differential equations with variable parameters. This system ensure...
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Photoresistors based on amorphous Si-Sn thin films (270-285 nm) with different concentration of tin were studied by spectral measurements of photoconductivity at room temperature and by low-temperature measurements of...
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