Dynamics of Bubbles in a Spherical Cluster under Increasing Liquid Pressure

IF 1 4区 物理与天体物理 Q4 PHYSICS, APPLIED High Temperature Pub Date : 2024-03-21 DOI:10.1134/s0018151x23050103
R. I. Nigmatulin, A. A. Aganin, I. A. Aganin, A. I. Davletshin
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Abstract

The response of gas (air) bubbles in a spherical cluster to an increase in the pressure of the surrounding liquid (water) is considered. Consideration is carried out only until a bubble in the cluster disintegrates or collides with another bubble. The influence of the amplitude of the increase in the liquid pressure, as well as the position of the bubbles in the cluster and the interaction between the bubbles, is studied. The centers of the cluster bubbles are located at the nodes of a cubic grid, one of which is in the center of the cluster. The effect of the interaction of bubbles is assessed by comparison with the response of a single bubble. The cluster consists of 123 bubbles, the liquid pressure is 1 bar. Initially, the bubbles are spherical with a radius of 0.1 mm, the cluster radius is about 3 mm. A discrete model is used, in which, together with the radial oscilations of bubbles, their movements in the liquid and their small deformations are also modeled. It is established that the maximum pressure in the bubbles, reached before the destruction or collision of any of them, is realized when the liquid pressure increases by 10 bar and turns out to be approximately 6500 times greater than their initial pressure and approximately 30 times greater than the response of a single bubble.

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液体压力增大时球形簇中气泡的动态变化
摘要 研究了球形气泡团中的气体(空气)对周围液体(水)压力增加的反应。只考虑到气泡团中的一个气泡解体或与另一个气泡碰撞。研究了液体压力增加的幅度、气泡在气泡团中的位置以及气泡之间相互作用的影响。气泡群的中心位于立方网格的节点上,其中一个节点位于气泡群的中心。通过与单个气泡的响应进行比较,评估了气泡相互作用的影响。气泡群由 123 个气泡组成,液体压力为 1 巴。最初,气泡为半径为 0.1 毫米的球形,气泡簇半径约为 3 毫米。使用的是离散模型,其中除了气泡的径向振荡外,还模拟了气泡在液体中的运动和微小变形。结果表明,当液体压力增加 10 巴时,气泡中的最大压力会在任何一个气泡被破坏或碰撞之前达到,比气泡的初始压力高出约 6500 倍,比单个气泡的反应高出约 30 倍。
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来源期刊
High Temperature
High Temperature 物理-物理:应用
CiteScore
1.50
自引率
40.00%
发文量
0
审稿时长
4-8 weeks
期刊介绍: High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.
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