Multiscale modelling of physical processes along water-soil interface

沿水土界面物理过程的多尺度建模

基本信息

项目摘要

This project aims on the extension of the numerical simulation methods to problems that focus on flow phenomena within the soil. A first topic in that context is the simulation of the fluid flow and, as a result, the internal erosion (suffusion) within a soil. As the fluid flow around the particles cannot be resolved in the unresolved CFD-DEM, an extension of the existing method is needed to precisely depict the movement of the particles in a soil bed due to changing hydraulic gradients. A second topic is the depiction of a fluid/air interface within the soil body and the resulting surface tension forces (capillary forces). These two settings come with flow regimes that have not been considered so far, and will require the implementation of new force models. These developments will enable deeper insights in the hydrodynamically induced failure of soil bodies and the modelling of the water-soil interactions in saturated and and the first numerical modelling of unsaturated sandy slopes with unresolved CFD-DEM. To reach the defined objectives a co-operation between Hamburg University of Technology/Germany and DCS Computing Linz/Austria is planned. DCS is developing the code CFDEMÒcoupling, which is used in the research project. This cooperation is covered by the D-A-CH agreement (DFG in Germany and FWF in Austria).
该项目旨在将数值模拟方法扩展到关注土壤内流动现象的问题。在这方面的第一个主题是模拟流体流动,并因此模拟土壤内部的侵蚀(土壤侵蚀)。由于无法在未解析的CFD-DEM中解析颗粒周围的流体流动,因此需要对现有方法进行扩展,以精确描述由于水力梯度变化而导致的土壤床中颗粒的运动。第二个主题是描述土壤体内的流体/空气界面以及由此产生的表面张力(毛细力)。这两种设置都有迄今为止尚未考虑过的流态,并且需要实施新的力模型。这些发展将使更深层次的见解在流体动力学引起的故障的土体和模拟的水-土相互作用的饱和和未解决的CFD-DEM的非饱和桑迪斜坡的第一个数值模拟。为了达到既定的目标之间的合作汉堡理工大学/德国和DCS计算林茨/奥地利计划。DCS正在开发用于研究项目的代码CFDEM耦合。这种合作由D-A-CH协议(德国的DFG和奥地利的FWF)涵盖。

项目成果

期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Numerical and experimental analysis of the extraction mechanism of an anchor plate embedded in saturated sand
  • DOI:
    10.1016/j.compgeo.2019.03.014
  • 发表时间:
    2019-07
  • 期刊:
  • 影响因子:
    5.3
  • 作者:
    M. Kanitz;A. Hager;J. Grabe;C. Goniva
  • 通讯作者:
    M. Kanitz;A. Hager;J. Grabe;C. Goniva
Experimental Study of the Influence of the Pore Water Pressure Evolution and the Shear Band Formation on the Extraction Resistance of Submerged Anchor Plates
孔隙水压力演化和剪切带形成对水下锚板抗拔力影响的实验研究
Numerical Investigations of the Extraction of Submerged Foundations by Coupled CFD-DEM
CFD-DEM 耦合提取水下地基的数值研究
  • DOI:
    10.1115/omae2017-61299
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kanitz;Goniva;C. Kloss
  • 通讯作者:
    C. Kloss
Influence of Suction Dredging on the Failure Mechanism of Sandy Submarine Slopes: Revisited With a Coupled Numerical Approach
抽吸疏浚对海底沙坡破坏机制的影响:用耦合数值方法重新审视
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Professor Dr.-Ing. Jürgen Grabe其他文献

Professor Dr.-Ing. Jürgen Grabe的其他文献

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{{ truncateString('Professor Dr.-Ing. Jürgen Grabe', 18)}}的其他基金

Investigation of gas migration as a triggering mechanism for submarine landslides on continental slopes (TRISCO)
气体运移作为大陆坡海底滑坡触发机制的研究(TRISCO)
  • 批准号:
    401025920
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Nonlinear wave propagation due to impulse-like actions in saturated, partially drained soil
由于饱和、部分排水土壤中的脉冲作用而导致的非线性波传播
  • 批准号:
    313605443
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Installation of marine structures by suction - hydro-mechanical coupled numerical modelling
吸力安装海洋结构物 - 水力耦合数值模拟
  • 批准号:
    289128395
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Influence of uncertain soil models on the construction and design of geotechnical structures
不确定土模型对岩土结构施工和设计的影响
  • 批准号:
    311889072
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Hydro-mechanical interaction in permeable pavement constructions under consideration of unsaturated states
考虑非饱和状态的透水路面结构的水力相互作用
  • 批准号:
    285972906
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigation of installation caused interlocking failure of combined steel sheet piles
组合钢板桩安装引起联锁失效的调查
  • 批准号:
    249022811
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Stability of artificial subaqueous slopes in sandy soils
沙土中人工水下边坡的稳定性
  • 批准号:
    255415996
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Hydraulic dissolution of soil
土壤水力溶解
  • 批准号:
    260695819
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigations on the drift of piles subjected to cyclic lateral loading with a changing loading direction and on the reduction of the drift
改变荷载方向的循环侧向荷载作用下桩的漂移及减小漂移的研究
  • 批准号:
    163167571
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Influence of capillarity on the mechanical behaviour of non-cohesive soils under dynamically loaded logistic areas
动态荷载物流区域下毛细管现象对非粘性土力学行为的影响
  • 批准号:
    162924550
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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