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1.
The available results of laboratory experiments on the formation of free vortices and controlling of their behavior are compared with the results of mathematical simulation of corresponding flows. This is accomplished by constructing solutions for a set of gas dynamics equations. The comparison is performed for a specific scheme of origination and functioning of free ascending twisting flows. In particular, it is shown that the experimental results confirm the proposed scheme of the origination and initial twisting of ascending vortex flows and validate the reason of their stable functioning with the help of the method intended for controlling generated vortices using vertical grids which was implemented in the experiments. The fact of origination of an ascending flow twisting and its directing is mathematically substantiated using the solution to a specific initially edge problem for a set of gas dynamics equations. A stationary flow whose parameters are close to gas-dynamic parameters of free vortices reproduced in the experiments is calculated. 相似文献
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Measurement Techniques - 相似文献
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Measurement Techniques - 相似文献
6.
The effect of the location of the initiation point on explosionfield parameters is studied numerically using as an example the detonation of a stoichiometric mixture of propane with air. The shape of the cloud of the mixture (toroid) and the ratio of its dimensions in calculations are typical of the volumes of air–fuel mixtures formed in accidents. The effect of the initiation point location within the cloud cross section was studied with variation in the position of the lower edge of the cloud above the underlying surface. 相似文献
7.
A. V. Gil’ A. S. Zavorin A. V. Starchenko S. V. Obukhov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2011,45(1):42-49
Results are presented from numerical simulations of mass-transfer and combustion processes in the furnace of a BKZ-420-140-2
boiler using the applied program package FIRE 3D with replacement of the design ékibastuz coal by Kuznetsk grade D hard coal
and Irsha-Borodino grade 2B lignite. 相似文献
8.
Yu. V. Obukhov 《Journal of Superconductivity》1992,5(2):101-105
Magnetization measurements on a ceramic YBaCuO sample were carried out. TheM(H, T) dependence has demonstrated some peculiarities which we assume are connected withH
j1,H
j2,H
c1 fields. By analyzing the magnetization in the field region betweenH
j1 andH
j2 within the framework of the critical state model, one obtains the dependence of the intergranular critical current density on field and temperature. 相似文献
9.
Results of experimental investigation of the influence of the operating time of a heating surface on the intensity of heat
transfer in the kerosene and water boiling on it are presented. The experimental data on the heat transfer in the indicated
liquids boiling on unrun heating surfaces have been generalized using different relations.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 78, No. 3, pp. 134–140, May–June, 2005. 相似文献
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