Scale 10 sloshing model tests
General information
Sloshing in partially filled LNG tanks is the most emerging technical issue and concern of the LNG industry associated with the application of the membrane technology. MARIN serves the industry with advice towards risk reduction associated with sloshing. This advice is twofold. On the one hand we advice on the allowable sloshing events, which assure integrity of containment systems. On the other hand we advice how to reduce the probability of sloshing occurrence.
Sloshing occurence and effects depend on:
Sloshing in partially filled LNG tanks is the most emerging technical issue and concern of the LNG industry associated with the application of the membrane technology. MARIN serves the industry with advice towards risk reduction associated with sloshing. This advice is twofold. On the one hand we advice on the allowable sloshing events, which assure integrity of containment systems. On the other hand we advice how to reduce the probability of sloshing occurrence.
Sloshing occurence and effects depend on:
- Environmental conditions
- Floating structure (shape and dimensions)
- Number, size and geometry of LNG tanks
- Filling level of the LNG tanks
- Coupling between motions of the floating structure and LNG
- Hydro-structural interaction
Full scale tests
Large scale tests
Services
The strength assessment of containment systems under sloshing events is a very complex process, which is still a subject of extensive international research. MARIN's Hydro-Structural Services (HSS) leads a part of this research that involves full and large scale testing of membrane containment systems. Based on practical criteria we also advice on necessity of using hydro-elastic methods, when assessing strength of structures subjected to sloshing impacts.
The Offshore business unit as well as the Hydro Structural Services group (HSS, part of the Trials & Monitoring business unit) can serve you with the following topics:
The strength assessment of containment systems under sloshing events is a very complex process, which is still a subject of extensive international research. MARIN's Hydro-Structural Services (HSS) leads a part of this research that involves full and large scale testing of membrane containment systems. Based on practical criteria we also advice on necessity of using hydro-elastic methods, when assessing strength of structures subjected to sloshing impacts.
The Offshore business unit as well as the Hydro Structural Services group (HSS, part of the Trials & Monitoring business unit) can serve you with the following topics:
- Advice on dimensions and shapes of floating structures and their tanks by desk studies and numerical simulations (DIFFRAC)
- Verify dimensions and shapes of floating structures and their tanks by model tests, with proper allowance for the coupling
- Define limits for tank filling that are free of sloshing events, using numerical calculations (e.g. COMFLOW) and / or model testing
- Identify sloshing events for partial filling levels, using numerical calculations (e.g. COMFLOW) and/or model testing
- Advice how to distribute LNG between different tanks when continuously producing (or regasifying) to minimise sloshing occurrences
- Advice on the adequacy of LNG containment systems by full and large scale tests
Facilities & Tools
For the study of complex wave impact loads such as sloshing the following tools are available:
For the study of complex wave impact loads such as sloshing the following tools are available:
- Dedicated model tests, at small scales, in the various available model test basins
- Numerical calculations, using the COMFLOW and DIFFRAC program
- Dedicated sloshing tests modeled by breaking waves in a flume at full and large scales.
Software Sales
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.
Experience record
The list below gives a review of projects involving sloshing carried out at MARIN:
The list below gives a review of projects involving sloshing carried out at MARIN:
- Sloshel User Group, 2010 - 2011
- Sloshel JIP (9 participants), 2005 -2010
- COMFLOW III JIP, started in 2009
- COMFLOW II JIP (20 participants), 2004-2008
- SALT JIP model tests (12 participants), 2004
- Several R&D projects
Most recent papers on sloshing presented by MARIN
(complete overview of papers can be found under Publications)
(complete overview of papers can be found under Publications)
A Mark III panel subjected to a flip-through wave impact: results from the Sloshel project
L. Brosset, W. Lafeber, H. Bogaert, M. Marhem, P. Carden, J. Maguire, ISOPE 21th International Offshore and Polar Engineering Conference, Maui, USA, 2011
Hydro-structural behavior of LNG membrane containment systems under breaking wave impacts
Bogaert, H., Léonard, S., Marhem, M., Leclere, G. and Kaminski, M.L., ISOPE 20th International Offshore and Polar Engineering Conference, Beijing, China, 2010
Modelling The Effect Of Sloshing On Ship Motions
Bunnik, T.H.J. (MARIN) and Veldman, A. (University of Groningen), OMAE ASME 29th International Conference on Ocean, Offshore and Arctic Engineering, Shanghai, 2010
Interaction between wave impacts and corrugations of MarkIII Containment System for LNG carriers
Bogaert, H., Brosset, L. and Kaminski, M.L., ISOPE 20th International Offshore and Polar Engineering Conference, Beijing, China, 2010
Sloshing and scaling: results from the Sloshel project
Bogaert, H., Léonard S., Brosset, L. and Kaminski, M.L., ISOPE 20th International Offshore and Polar Engineering Conference, Beijing, China, 2010
L. Brosset, W. Lafeber, H. Bogaert, M. Marhem, P. Carden, J. Maguire, ISOPE 21th International Offshore and Polar Engineering Conference, Maui, USA, 2011
Hydro-structural behavior of LNG membrane containment systems under breaking wave impacts
Bogaert, H., Léonard, S., Marhem, M., Leclere, G. and Kaminski, M.L., ISOPE 20th International Offshore and Polar Engineering Conference, Beijing, China, 2010
Modelling The Effect Of Sloshing On Ship Motions
Bunnik, T.H.J. (MARIN) and Veldman, A. (University of Groningen), OMAE ASME 29th International Conference on Ocean, Offshore and Arctic Engineering, Shanghai, 2010
Interaction between wave impacts and corrugations of MarkIII Containment System for LNG carriers
Bogaert, H., Brosset, L. and Kaminski, M.L., ISOPE 20th International Offshore and Polar Engineering Conference, Beijing, China, 2010
Sloshing and scaling: results from the Sloshel project
Bogaert, H., Léonard S., Brosset, L. and Kaminski, M.L., ISOPE 20th International Offshore and Polar Engineering Conference, Beijing, China, 2010
Most recent articles on sloshing written for MARIN report
(complete overview of articles can be found under Publications)
(complete overview of articles can be found under Publications)
MARIN set to open its new Depressurised Wave Basin
MARIN Report, 2011
Moonpool mysteries
Klaas Kooiker, MARIN Report, 2011
New tests advance sloshing knowledge
MARIN Report, 2010
Sloshing impacts captured in 110 full-scale tests
Mirek Kaminski & Edwin van de Bunt, MARIN report, 2009
Full-scale sloshing tests underway at MARIN
Mirek Kaminski, MARIN Report, 2009
MARIN Report, 2011
Moonpool mysteries
Klaas Kooiker, MARIN Report, 2011
New tests advance sloshing knowledge
MARIN Report, 2010
Sloshing impacts captured in 110 full-scale tests
Mirek Kaminski & Edwin van de Bunt, MARIN report, 2009
Full-scale sloshing tests underway at MARIN
Mirek Kaminski, MARIN Report, 2009
Contact
For more information on how MARIN can help you with sloshing problems, please contact:
Offshore Department, Trials & Monitoring Department or Hydro-Structural Services (HSS)
For more information on how MARIN can help you with sloshing problems, please contact:
Offshore Department, Trials & Monitoring Department or Hydro-Structural Services (HSS)