Robust acoustic wave manipulation of bubbly liquids

Abstract

Articles you may be interested inAn experimental study on resonance of oscillating air/vapor bubbles in water using a two-frequency acoustic apparatus Phys. Fluids 15, 1189 (2003); 10.1063/1.1561613 Viscous effects on the interaction force between two small gas bubbles in a weak acoustic field

Modes of self-organization of diluted bubbly liquids in acoustic fields: One-dimensional theory

“…The experimental observations qualitatively agree with the present theory, where the front of the AIT wave was clearly indicated by a thin region of high bubble concentration. We also remark that despite a satisfactory agreement with experiments, computations using discrete weakly nonlinear collisionless models of bubbly liquids, 26,27 should be studied more systematically both from the theoretical and computational point of view.…”

“…To bypass this difficulty, experiments were recently conducted to observe a water-air bubbly liquid exposed to an acoustic field of intensity below the cavitation threshold. [25][26][27] It was shown that bubbles can be "pushed" away from the acoustic source forming a region almost free from bubbles-the phenomenon termed as the acoustically induced transparency (AIT). It was also shown that the observed effect cannot be explained by well-known theories of single bubble drifting in an acoustic field.…”

“…It was also shown that the observed effect cannot be explained by well-known theories of single bubble drifting in an acoustic field. This is a collective effect of bubbles, which can be described by a mathematical model of bubble organization in an acoustic field [25][26][27] At the same token, it is well known from the experiments on "acoustic Lichtenberg figures" 14 and from systematic studies on the dynamics of bubbles in a standing sound field, 28 that in fresh tap water containing some submerged microbubbles at very low pressure amplitudes the bubbles move toward the pressure antinodes forming bubble clusters.…”

Experimental study of interaction of bubble media with acoustic field

“…При самоор-ганизации множества пузырьков в ультразвуковом поле интенсивностью ниже кавитационного порога обнаруживается выталкивание пузырьков воздуха в воде от источника поля независимо от положе-ния пузырька в пространстве [3]. При этом возника-ет область, практически очищенная от пузырьков, в которой распределение поля давления постоянно меняется с движением фронта пузырьков, что фор-мирует двустороннее взаимодействие системы пу-зырьки-поле .…”

Численно-Экспериментальное Исследование Деформации Пузырька На Поверхности В Сдвиговом Потоке Вязкой Жидкости

“…Для проведения экспериментальных исследований была разработана и собрана лабораторная установка (рис. 1) на базе длиннофокусного оптического микроскопа и высокоскоростной видеокамеры со скоростью записи изображений в 1000 fps [10]. Основной частью установки является проточная экспериментальная ячейка из прозрачного оргстекла с внутренними размерами 71 × 7 × 7 mm.…”