The effect of a textured surface in the form of triangular prisms on the occurrence and development of cavitation behind the cylinder in microchannels

Lobasov Alexander S.; Kravtsova Aleksandra Yu.

Дополнительные ссылки: eLibrary

База данных: Каталог библиотеки СФУ

Библиографическое описание: The effect of a textured surface in the form of triangular prisms on the occurrence and development of cavitation behind the cylinder in microchannels : научное издание / Alexander S. Lobasov, Aleksandra Yu. Kravtsova. - Текст : непосредственный // Physics of Fluids. - 2024. - Т. 36, № 7. - ISSN 1070-6631. - ISSN 1089-7666, DOI 10.1063/5.0214411.

Аннотация: Cavitation flow in a microchannel behind a cylinder with a smooth and textured surface is investigated using mathematical modeling methods. The textured cylinder has 72 triangular prisms on its surface. The height of the prism, normal to the surface of the bluff body, was 100 nm. Profiles of the flow velocity and volume fraction of vapor are constructed. The monitoring of the velocity and pressure at five points behind both the smooth and the textured cylinder was carried out, while the inlet pressure changed up to 30 bars. It is shown that there is no restructuring of the vortex street to a symmetrical form at quite high-pressure values at the inlet to the channel for a rough cylinder. Namely, roughness prevents the flow stabilization. A pressure jump in the microchannel is observed when a cavity appears with a uniform increase in the flow rate. Two pulsation frequencies are determined for each of the flow modes. The first pulsation frequency ranges from 480 to 2200 Hz and is associated with the formation of cavitation. The second pulsation frequency is associated with the hydrodynamic flow around the cylinder and its values range from 26 to 95 kHz. An increase in surface roughness leads to a growth of the cavitation pulsation frequency and intensifies cavitation. At that, the velocity pulsations in the flow before the onset of cavitation increase, and the frequency of hydrodynamic pulsations after its onset decrease. The paper provides an analysis of the drag coefficient of a hydraulic section with rough and smooth cylindrical bluff bodies. The effect of roughness on the change in the hydrodynamic characteristics of the flow is described.

Год издания: 2024

Авторы: Lobasov Alexander S. , Kravtsova Aleksandra Yu.

Издательство: American Institute of Physics

Источник: Physics of Fluids

Выпуск: Т. 36, № 7

Держатель оригинала документа: Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences 2, 630090 Novosibirsk, Russia, Novosibirsk State University 3, 630090 Novosibirsk, Russia, Siberian Federal University 1, 660074 Krasnoyarsk, Russia

Количество экземпляров:

Твёрдая копия издания отсутствует в фонде библиотеки

Показать дополнительные сведения

Investigation of the cavitation processes behind a cylinder located in a microchannel in a wide… : статья из журнала

Lobasov A.S. и др.
2022 год

Features in the Resonance Behavior of Magnetization in Arrays of Triangular and Square Nanodots : статья из журнала

Orlov Vitaly и др.
2021 год

Flow and Heat Transfer Characteristics during the Flow around Tandem of Circular Cylinders : статья из журнала

Seroshtanov Vladimir и др.
2023 год

On the Influence of Droplet Size on the Breakup Induction Period in the Flow behind a Shock Wave : научное издание

Shebeleva A.A. и др.
2024 год

A Classical Aspect of the Dirac Equation in the Context of Conformable Fractional Derivative : статья из журнала

Ilyas Haouam
2025 год

Pseudogap in the lightly hole-doped triangular-lattice moiré Hubbard model : научное издание

Kuz'min V.I. и др.
2025 год

A microfluidic rheometer for a non-Newtonian fluids based on the analysis of the recirculation… : статья из журнала

Lobasov Alexander S. и др.
2025 год

Behavior of hydrofoil cavitation in a slit channel : статья из журнала

Kravtsova Aleksandra Yu. и др.
2024 год

A Method for Measuring the Rheology of a Non-Newtonian Fluid Based on the Analysis of the… : научное издание

Lobasov Alexander S. и др.
2025 год

Features of the Course of the Solid-State Reactions in a Sn/Fe/Cu Trilayer Film System : научное издание

Balashov Yu.Yu. и др.
2024 год

Detection of TeV Emission from the Crab Nebula Using the First Two IACTs in TAIGA in Stereo Mode… : статья из журнала

Volchugov P.A. и др.
2023 год

Experimental and Numerical Study of Free Convection Heat Transfer Around the Junction of Circular… : статья из журнала

Malah Hamid и др.
2020 год

A Classical Limit for the Dirac Equation in the Context of Magueijo-Smolin Model of the Doubly… : статья из журнала

Haouam Ilyas
2024 год

The Effect of Aqueous Solutions Processed Using Gradual Technology on the Emission of a… : научное издание

Stepanov G. O. и др.
2024 год

NUMERICAL INVESTIGATION OF THE DISTANCE BETWEEN MICROPILLARS EFFECT ON THE FLOW CHARACTERISTICS IN… : научное издание

Lobasov Alexander S. и др.
2022 год

Relaxation of the trapped magnetic flux in a mesoscopic HTS with artificial pinning in the form of… : научное издание

Maksimova A.N. и др.
2024 год

Библиотечно-издательский комплекс СФУ

The effect of a textured surface in the form of triangular prisms on the occurrence and development of cavitation behind the cylinder in microchannels
статья из журнала

Похожие публикации