Collapsing bubbles in complex geometries

复杂几何形状中的气泡破裂

• 批准号: 2281992
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2281992
• 关键词: Collapsing; bubbles; complex; geometries

One of the most violent free surface flows is the collapse of a cavitation bubble. The focusing of energy in such a collapse is strong enough to damage ship propellers, but can also be used to clean surfaces or enhance chemical reactions. The way that a bubble collapses depends on the type and the shape of the materials in the vicinity of the bubble. The aim of this project is to address a basic fundamental aspect of this energy focusing mechanism, by investigating the influence of complex surrounding geometries on the collapse of single bubbles. These findings can in the longer term be applied to make more efficient use of bubbles, for example in the ultrasonic cleaning of complex 3D-printed structures.In this project you will use a variety of experimental techniques, which include laser-induced cavitation, high-speed imaging, and particle image velocimetry. The candidate should have a background in physical sciences or engineering and have an interest in fluid dynamics.

最猛烈的自由表面流之一是气腔气泡的崩溃。这种崩溃中能量的聚焦足以损坏船舶螺旋桨，但也可以用于清洁表面或增强化学反应。气泡崩溃的方式取决于气泡附近材料的类型和形状。该项目的目的是通过研究复杂的几何形状对单个气泡崩溃的影响来解决该能量重点机制的基本基本方面。这些发现可以从长远来看，以更有效地利用气泡，例如在复杂的3D打印结构的超声清洁中。在本项目中，您将使用各种实验技术，其中包括激光诱导的空化，高速成像和粒子图像速率。候选人应具有物理科学或工程的背景，并对流体动态感兴趣。

项目成果

Modeling bubble collapse anisotropy in complex geometries

模拟复杂几何形状中的气泡破裂各向异性

• DOI: 10.1103/physrevfluids.7.123601
• 发表时间: 2022
• 期刊: Physical Review Fluids
• 影响因子: 2.7
• 作者: Andrews E

Cavity collapse near slot geometries

• DOI: 10.1017/jfm.2020.552
• 发表时间: 2020-04
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: Elijah D. Andrews;D. F. Rivas;I. Peters

Bubble collapse in complex geometries

复杂几何形状中的气泡破裂

• 发表时间: 2023
• 作者: Andrews, E D