Scaling properties of interfacial flows in tubes of rectangular cross-section.

矩形横截面管中界面流的缩放特性。

• 批准号: EP/D002214/1
• 负责人: Anne Juel
• 金额: $ 16.59万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD002214%2F1
• 关键词: Scaling; properties; interfacial; flows; tubes

This proposal concerns the propagation of air fingers in liquid-filled tubes of rectangular cross-section. This fundamental interfacial flow is encountered in a wide range of applications from thin-film coating to enhanced oil recovery. The aim of the proposed research is to gain an understanding of the dependence of such flows on the aspect-ratio of the tube, alpha (the ratio of the width to the height of the cross-section). Promising experimental results, obtained in Manchester, suggest that certain global features of finger propagation in tubes of different aspect ratios can be obtained by rescaling master curves , obtained for a square tube, by functions of the aspect ratio. This result is of fundamental significance because it suggests a connection between the interfacial dynamics in square or nearly square tubes (alpha =1- 2) and those in Hele-Shaw cells (alpha >> 1). The evolution of the flow between these two limiting geometries will be characterised in detail using the powerful combination of experiments and three-dimensional numerical simulations.

本文研究矩形截面充液管内空气指的传播。这种基本的界面流动在从薄膜涂层到提高石油采收率的广泛应用中遇到。所提出的研究的目的是了解这种流动对管的纵横比α（横截面的宽度与高度的比率）的依赖性。在曼彻斯特获得的有希望的实验结果表明，在不同的长宽比的管中的手指传播的某些全球功能，可以通过重新缩放主曲线，获得一个正方形管，由长宽比的函数。这一结果具有重要意义，因为它表明了正方形或近似正方形管（α =1- 2）中的界面动力学与Hele-Shaw盒（α>> 1）中的界面动力学之间的联系。这两个限制的几何形状之间的流动的演变将详细使用强大的实验和三维数值模拟相结合的特点。

项目成果

The steady propagation of an air finger into a rectangular tube

空气指稳定传播到矩形管中

• DOI: 10.1017/s0022112008003455
• 发表时间: 2008
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: DE LÓZAR A

Tube geometry can force switchlike transitions in the behavior of propagating bubbles

管的几何形状可以迫使气泡传播行为发生类似开关的转变

• DOI: 10.1063/1.3247879
• 发表时间: 2009
• 期刊: Physics of Fluids
• 影响因子: 4.6
• 作者: De Lózar A