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  4. Real-time simulation of impact waves in LNG ship tanks with Lattice Boltzmann single-phase models
 
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Real-time simulation of impact waves in LNG ship tanks with Lattice Boltzmann single-phase models

Publikationstyp
Conference Paper
Date Issued
2016
Sprache
English
Author(s)
Janßen, Christian Friedrich  orcid-logo
Überrück, Micha  
Rung, Thomas  orcid-logo
Behruzi, Philipp  
Institut
Fluiddynamik und Schiffstheorie M-8  
TORE-URI
http://hdl.handle.net/11420/5459
Volume
2016
Start Page
843
End Page
850
Citation
Proceedings of the International Offshore and Polar Engineering Conference (2016-January): 843-850 (2016)
Contribution to Conference
26th Annual International Ocean and Polar Engineering Conference, ISOPE 2016  
Publisher
International Society of Offshore and Polar Engineers (ISOPE)
This contribution addresses the efficient numerical simulation of wave impact on the side walls of two-dimensional containers. For the flow field calculations, an efficient Lattice Boltzmann Method (LBM) is used. Whilst modeling essentially similar physics as classical continuum mechanics procedures, LBM features a number of performance-related advantages, particularly concerning data locality and parallel computing. For the numerical analysis of wave impact, a single-phase model is employed. The model tracks the free surface with a conventional VOF technique and represents the aerodynamics by proper kinematic and dynamic free surface boundary conditions at the phase interface. The numerical simulations are conducted with the GPU-accelerated free-surface flow solver ELBE. Thanks to the high efficiency of the numerical method and the GPU implementation, the sloshing behavior can be predicted in (or near) real-time, including impact pressure details. In this contribution, the numerical results will be discussed in detail, including a series of 2D validation cases. Limitations of the free-surface model and potential extensions to fully-resolved air-phase dynamics will be discussed.
Subjects
ELBE
Impact pressure
LBM
Tank sloshing
DDC Class
600: Technik
620: Ingenieurwissenschaften
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