Flow in collapsible tubes: Computations, experiments and (at last!) a rational mathematical model for the onset of self-excited oscillations

塌陷管中的流动：计算、实验和（最后！）自激振荡发生的合理数学模型

• 批准号: EP/D070422/1
• 负责人: Matthias Heil
• 金额: $ 29.89万
• 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%2FD070422%2F1
• 关键词: Flow; collapsible; tubes; Computations; experiments

Many physiological flows (e.g. blood flow in the veins and arteriesor the flow of air in the pulmonary airways)are strongly affected by the interaction between the fluid flowand the vessel wall elasticity. The problem of flow in collapsible tubes has therefore received much interest in the biofluids researchcommunity. Experimentally, the problem is typically studied with a `Starling resistor', a device in which fluid isdriven through a finite-length, thin-walled, elastic tube whichis mounted on two rigid tubes and enclosed in a pressure chamber.One of the most striking features of this system is its propensity to develop large-amplitude self-excited oscillations. Our understanding of the mechanism(s) that initiate and maintain these oscillations is still very limited. It is the aim of this research proposal to undertake the firsttruly comprehensive study of flow in 3D collapsible tubes, employinga combination of theoretical (asymptotic), numerical and experimental methods.

许多生理流动（例如静脉和动脉中的血流或肺气道中的空气流动）受到流体流动和血管壁弹性之间的相互作用的强烈影响。因此，可折叠管中的流动问题在生物流体研究界引起了很大的兴趣。在实验上，这个问题通常是用一个“Starling电阻器”来研究的，在这个装置中，流体被驱动通过一个有限长的、薄壁的弹性管，弹性管安装在两个刚性管上，并封闭在一个压力室内。我们对启动和维持这些振荡的机制的理解仍然非常有限。本研究提案的目的是采用理论（渐进）、数值和实验方法相结合，对3D可折叠管内的流动进行首次真正全面的研究。

项目成果

Solvers for large-displacement fluid-structure interaction problems: segregated versus monolithic approaches

• DOI: 10.1007/s00466-008-0270-6
• 发表时间: 2008-12-01
• 期刊: COMPUTATIONAL MECHANICS
• 影响因子: 4.1
• 作者: Heil, Matthias;Hazel, Andrew L.;Boyle, Jonathan
• 通讯作者: Boyle, Jonathan