“Anomalous” phenomena in fluid under the action of vibration

Blekhman, I. I.; Вайсберг, Л. А.; Vasilkov, V. B.; Yakimova, K. S.

doi:10.1134/s1028335808100054

Cited by 17 publications

(24 citation statements)

References 2 publications

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“…This may be applied to the motion chaotization phenomenon occurring in the surface layer of fluid at higher vibration frequencies as it was in our experiment (the formation of a turbulent gas-saturated surface layer). 4,11,20 The same chaotization takes place at large temperature drop in thermal convection (this case served as an incitement for the discovery of the Lorenz attractor and dynamic chaos).…”

Section: Theoretical Explanation Of Surface Effects Observedmentioning

confidence: 99%

“…Such approximation was used and substantiated, particularly in paper. 11 The absolute displacement of the rod's cross-section, which in the undisturbed state is situated at distance x from its free (upper) edge, is designated as ðx, tÞ. It can be found by solving the wave equation…”

Section: Equation Of Bubble Motionmentioning

confidence: 99%

“…Quantitatively, the values of overloads entailing ball sinkings were somewhat less than the overload values requiring gas bubble sinking in gas-saturated fluid. 10,11 To verify the assumption that the bubble sinking effect is associated with its volume pulsations due to vibration, an experiment with a nondeformable rigid ball, whose density was much smaller than the density of the water, was conducted. As expected, no sinking effect was observed in this case.…”

Section: Experimental Study Of Volumetric Effectsmentioning

confidence: 99%

“…Volumetric effects are discussed in the second part of this article. In particular, the effect of gas bubbles sinking in a vertically oscillating fluid-filled vessel, as observed in several papers, 10,11 was studied. Up to now, two different mechanisms explaining the effect of gas bubble sinking have been proposed: 'wave' [11][12][13][14] and 'nonwave', 'vibrational'.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, the effect of gas bubbles sinking in a vertically oscillating fluid-filled vessel, as observed in several papers, 10,11 was studied. Up to now, two different mechanisms explaining the effect of gas bubble sinking have been proposed: 'wave' [11][12][13][14] and 'nonwave', 'vibrational'. 15,16 The first explanation brings forward the wave amplitude gradient as a determining factor, while the second one is apt to explain the phenomenon by bubble compressibility.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Surface and volumetric effects in a fluid subjected to high-frequency vibration

Blekhman

Sorokin

Vasilkov

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this article, the results of experimental study of surface and volumetric effects arising in a fluid under the action of high-frequency vibration are considered. Some elements in the theory of the surface effects are analyzed with regard to their origin and interrelations with other similar phenomena. The height of splashing fountains on the fluid surface is assessed based on the analogy with particle bounce over a vibrating plane. It is found that the influence of vibration on the average velocity of fluid flow is more pronounced at such excitation parameters that enhance the surface effects under study, namely, the formation of cellular structures (Faraday ripple), the creation of turbulence in the fluid surface layer and splashing. The analytical study of motion of a bubble in an oscillating volume of a fluid, saturated with gas at a certain depth, is provided, with compressibility of both the bubble and surrounding gas-saturated fluid layer being taken into account. The condition of bubble sinking in such a compressible medium and the condition of vibrational instability of the separate state of the gas-fluid system are determined.

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Section: Theoretical Explanation Of Surface Effects Observedmentioning

confidence: 99%

Section: Equation Of Bubble Motionmentioning

confidence: 99%

Section: Experimental Study Of Volumetric Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Surface and volumetric effects in a fluid subjected to high-frequency vibration

Blekhman

Sorokin

Vasilkov

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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Research on Vibration Processes and Devices: New Results and Applications

Blekhman

Kremer

Vasilkov

2022

Mechanics and Control of Solids and Structures

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Stratification and Segregation Under Laminar Convection

Fedyushkin

2023

Earth and Environmental Sciences Library

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The paper is devoted to the study of natural convection and the formation of delamination in an incompressible liquid due to convective laminar flows in a closed region heated from the side. Weak, medium and intensive modes of stationary laminar thermal, concentration and hemoconcentration (thermohaline) convection are considered, in which nonlinear flow features are manifested that can radically change the flow structure and characteristics of heat and mass transfer. Nonmonotonic dependences of temperature and concentration segregation in the center of the square region on the Grashof number (an intensity of flow) were found. The features of the formation of a nonstationary periodic structure of thermal convection in boundary layers and in the core of a convective flow in a closed region are shown. Details of the formation of countercurrents inside the region with the direction opposite to the main convective flow are given. The influence of vertical and horizontal vibrations on oscillatory convection is shown.

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“Anomalous” phenomena in fluid under the action of vibration

Cited by 17 publications

References 2 publications

Surface and volumetric effects in a fluid subjected to high-frequency vibration

Surface and volumetric effects in a fluid subjected to high-frequency vibration

Research on Vibration Processes and Devices: New Results and Applications

Stratification and Segregation Under Laminar Convection

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