Modelling the Effects of Fluid-Structure Dynamic Interaction on Aquatic Plants

模拟流固动力相互作用对水生植物的影响

基本信息

批准号：
2786466
负责人：
金额：
--
依托单位：
Loughborough University
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2786466
关键词：
Modelling Effects Fluid Structure Dynamic

项目摘要

Aquatic vegetation is an essential component of riverine and coastal ecosystems. Drag forces, local turbulence, and equilibrium reconfigurations strongly depend on the geometric and biophysical properties of the vegetation, which then affect the health of the habitat, transportation phenomena, and flood risk.Understanding flow-vegetation interactions is of great strategic importance nationally and internationally due to their role in ecosystem restoration and the performance of nature-based solutions (e.g., salt marshes, seagrasses, and mangroves).Building on previous exploratory investigations led by the academic supervisors, this project aims to establish a computationally efficient nonlinear structural model to capture with a high degree of fidelity the fluid-forced reconfiguration of multi-stem aquatic plants. First, the principles and range of application of existing single-stem models will be extended by describing multi-stem plants as network-organised structures (i.e., as kinematic chains made of lumped masses, rigid links and rotational springs). Large deformations and nonlinear elasticity will be included in the analyses (i.e., the new model will cater for both material and geometrical nonlinearities).Second, the project will couple the structural model with a state-of-the-art open-source fluid dynamic solver (namely, OpenFOAM) to rigorously investigate the effects of fluid-structure interaction in several scenarios.Finally, opportunities for the experimental validation of the numerical results will be actively sought.

水生植被是河流和沿海生态系统的重要组成部分。阻力力，局部湍流和平衡重新配置在很大程度上取决于植被的几何和生物物理性质，然后影响栖息地的健康，运输现象和洪水风险。理解流量疫苗的相互作用在全国和国际上具有很大的战略意义，这是由于其在生态层面的恢复和盐水恢复的效果而在国际上的作用（ Mangrofes）。在学术主管领导的先前探索性调查中，该项目旨在建立一个具有计算高效的非线性结构模型，以高度的忠诚度捕获多肺化水产植物的流体重新配置。首先，将现有单茎模型的原理和应用范围通过将多茎植物描述为网络组织结构（即，由集体质量，刚性链接和旋转弹簧制成的运动链）来扩展。分析中将包括大型变形和非线性弹性（即，新模型将迎合材料和几何非线性）。第二，该项目将将结构模型与先进的开源流体动力求解器（即开放式效果）进行严格的实验效果，以使几个方案的效果进行效果。数值结果将被积极寻求。