Physical and mathematical modeling in the field of high-velocity hydrodynamics in the experimental base of the krasnoyarsk hydroelectric plant

Kulagin, Vladimir A.; Moskvichev, V. V.; Махутов, Н. А.; Маркович, Д. М.; Shokin, Yu. I.

doi:10.1134/s1019331616060034

Cited by 5 publications

(5 citation statements)

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“…К числу таких комплексообразователей относятся: дифосфат (пирофосфат) натрия (Na 4 P 2 O 7 ), триполифосфат натрия (Na 5 P 3 O 10 На базе этой феноменологической модели разработан целый ряд конструкций реакторов, смесителей, миксеров и другого оборудования, использующего для обработки воды и других жидких сред эффекты суперкавитации (СК) -СК-аппараты [36] . Расчет и проектирование этих аппаратов постоянно совершенствуется с использованием результатов численных и физических экспериментов [36][37][38][39][40][41][42][43][44] . Полученные результаты позволяют рациональным образом определять конструктивные параметры СК-аппаратов при их проектировании .…”

Section: анализ существующих методов дезактивации поверхностей с радиоактивным загрязнениемunclassified

Refinment of a decontamination technology for radioactively contaminated equipment

Shelenkova¹,

Kulagina²

2021

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This article analyzes the data on chemical decontamination methods dealing with radioactively contaminated surfaces. It considers the composition of solutions most commonly used for decontamination purposes. Numerical data are presented to illustrate the effectiveness of various decontamination methods. The paper considers an experiment on the decontamination of stainless steel samples with water following a cavitation treatment. The study reveals a dependence between the decontamination efficiency and the treatment time of the contaminated surface with a decontamination solution based on cavitation-activated water, which appears to be comparable with the results of the one involving an alkaline solution.

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Section: анализ существующих методов дезактивации поверхностей с радиоактивным загрязнениемunclassified

Refinment of a decontamination technology for radioactively contaminated equipment

Shelenkova¹,

Kulagina²

2021

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“…Наиболее распространённым инструментом для изучения кавитации являются кавитационные трубы -лабораторные установки, имеющие в своём составе замкнутый или разомкнутый трубопровод, в рабочем участке которого создаётся поток воды с регулируемыми скоростью и давлением. Гидродинамические, в том числе кавитационные, трубы необходимы не только в научноисследовательских, но и в проектных организациях, работающих в области создания корабельных движителей и гидравлических механизмов, а также в вузах, имеющих кафедры соответствующего профиля [6].…”

Section: экспериментальная установкаunclassified

“…Например, траектории движения частиц не совпадают с линиями тока основного компонента, отличительные особенности имеет распространение в многофазной среде ударных волн. Но главное отличие связано с динамикой процессов, происходящих на поверхности тела [4][5][6].…”

Section: Introductionunclassified

Modernization of the Cavitation Stand for the Investigation of Two-Phase Flow Regimes

Радзюк

Истягина

Radzyuk

et al. 2019

Journal of Siberian Federal University. Engineering &Amp; Technologies

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Experimental methods are the most obvious and reliable in cavitation studies. The number of bubbles of insoluble oxygen in a flow influences cavitation hrocesses. In order to reduce the amount of dissolved gases in the experimental setup, it is proposed to use a resorber. The flow regimes of fluid flow around a solid with the formation of a cavitation zone in the flow are investigated. The type of cavitation flow is determined. A comparison is made of the experimental results of the formation of cavitation conditions before and after the installation of the resorber. The experiments were carried out with technical tap water, the reliability of the results is confirmed by comparing them with the literature data

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“…The models of shallow water are successfully applied for calculation of a wide range of geophysical currents including the dynamics of surface and groundwater, landslides [1], torrential flows [2,3], the pyroplastic and granular masses movement [4], the simulation of large-scale atmospheric, sea and ocean currents [5], and the technospheric security problems [6,7]. To simulate the dynamics of channel and floodplain currents in the shallow water models, it is essential accounting for the hydraulic resistance [8,9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Bottom friction models for shallow water equations: Manning’s roughness coefficient and small-scale bottom heterogeneity

Dyakonova¹,

Хоперсков²

2018

J. Phys.: Conf. Ser.

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The correct description of the surface water dynamics in the model of shallow water requires accounting for friction. To simulate a channel flow in the Chezy model the constant Manning roughness coefficient is frequently used. The Manning coefficient nM is an integral parameter which accounts for a large number of physical factors determining the flow braking. We used computational simulations in a shallow water model to determine the relationship between the Manning coefficient and the parameters of small-scale perturbations of a bottom in a long channel. Comparing the transverse water velocity profiles in the channel obtained in the models with a perturbed bottom without bottom friction and with bottom friction on a smooth bottom, we constructed the dependence of nM on the amplitude and spatial scale of perturbation of the bottom relief.

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Physical and mathematical modeling in the field of high-velocity hydrodynamics in the experimental base of the krasnoyarsk hydroelectric plant

Cited by 5 publications

References 0 publications

Refinment of a decontamination technology for radioactively contaminated equipment

Refinment of a decontamination technology for radioactively contaminated equipment

Modernization of the Cavitation Stand for the Investigation of Two-Phase Flow Regimes

Bottom friction models for shallow water equations: Manning’s roughness coefficient and small-scale bottom heterogeneity

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