Project

NuLIMAS - Numerical modelling of liquefaction around marine structures

Goal: The NuLIMAS project aims at developing an accurate virtual laboratory to investigate Fluid-Structure-Soil Interaction (FSSI) around marine structures. This virtual lab will:

- Reduce the probability of liquefaction failures
- Increase the service life of marine structures
- Reduce risk, design uncertainty, and safety margins

NuLIMAS receives funding through the ERA-NET Cofund MarTERA (Grant No. 728053) in the H2020 framework. Funding is also received from the German Federal Ministry for Economic Affairs and Energy (Grant No. 03SX524A), the Scientific and Technological Research Council of Turkey (Grant No. TEYDEB-1509/9190068), and the Polish National Centre for Research and Development.

Date: 1 September 2020

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Project log

Christian Windt
added a research item
Knowledge of the interaction between free surface waves and the seabed is required for the reliable design of marine structures, preventing severe structural failures. To that end, this paper presents the numerical modelling of wave-induced residual liquefaction of seabed soil. An OpenFOAM® finite volume solver is developed to simulate the behaviour of pore pressure and shear stress in the soil and is validated against analytical reference data. The soil is considered as a poro-elastic solid and an additional equation is solved for the pore pressure buildup. The governing equations are valid only up to the onset of liquefaction. A criterion based on the accumulated pore pressure is applied in order to predict the onset of residual liquefaction. The results show that the pore pressure and shear stresses are in good agreement with the analytical results and the relative errors are less than three percent. Also, the numerical results indicate that the wave induced residual liquefaction originates from the mudline and progresses slowly down the soil which is consistent with the analytical results. The pore pressure buildup for a seabed with stone columns shows that the liquefaction potential is very low near the stone column.
Christian Windt
added an update
The NuLIMAS team is excited to announce that the submission of abstracts to our invited session "Numerical modelling of liquefaction and scour around marine structures" at the MARINE 2021 Conference is now open!
If you are working in the field of liquefaction and scour and would like to share your work, we invite you to submit your abstract by January 25th, 2021. Full papers are not compulsory, by highly recommended. A submission guideline can be found below.
For any further questions, don't hesitate to contact our project coordinator Christian Windt. We are looking forward to receiving your submissions.
 
Christian Windt
added an update
We are pleased to inform you that our project consortium is organising an invited session at the MARINE2021 conference in Edinburgh, Scotland. We are looking forward to receiving your contributions!
 
Christian Windt
added a project goal
The NuLIMAS project aims at developing an accurate virtual laboratory to investigate Fluid-Structure-Soil Interaction (FSSI) around marine structures. This virtual lab will:
- Reduce the probability of liquefaction failures
- Increase the service life of marine structures
- Reduce risk, design uncertainty, and safety margins
NuLIMAS receives funding through the ERA-NET Cofund MarTERA (Grant No. 728053) in the H2020 framework. Funding is also received from the German Federal Ministry for Economic Affairs and Energy (Grant No. 03SX524A), the Scientific and Technological Research Council of Turkey (Grant No. TEYDEB-1509/9190068), and the Polish National Centre for Research and Development.