The fluid mechanics of dynamically constricted tubes in pulsatile flow

脉动流中动态收缩管的流体力学

• 批准号: DP210100489
• 负责人: Prof Tracie Barber
• 金额: $ 16.88万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-02-01 至 2025-01-31
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210100489
• 关键词: fluid; mechanics; dynamically; constricted; tubes

This project is aimed at advancing the fundamental understanding of flow instability, the transition to turbulence and the effect on wall shear stress, in a dynamically constricted tube flow. The project will provide the first accurately resolved experimental flow analysis, using tomographic particle imaging velocimetry and 3D laser doppler anemometry, conducted on a novel experimental model, and will resolve, for the first time, turbulence characteristics of the dynamic constriction, using direct numerical simulation with a novel moving boundary implementation. The outcomes will provide the key link between fluid mechanics and wall shear stress, allowing future progress to be made in elucidating the causes of cardiovascular disease.

本项目旨在促进对动态收缩管流中流动不稳定性、向湍流过渡以及壁面剪切应力影响的基本理解。该项目将利用层析粒子成像测速技术和三维激光多普勒测风技术，在一种新的实验模型上进行首次精确解析的实验流动分析，并将首次使用具有新颖移动边界实现的直接数值模拟来解析动态收缩的湍流特性。这些结果将提供流体力学和壁面剪切应力之间的关键联系，使未来在阐明心血管疾病的原因方面取得进展。