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  4. On enhanced non-linear free surface flow simulations with a hybrid LBM-VOF model
 
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On enhanced non-linear free surface flow simulations with a hybrid LBM-VOF model

Publikationstyp
Conference Paper
Date Issued
2012-07-02
Sprache
English
Author(s)
Janßen, Christian Friedrich  orcid-logo
Grilli, Stephan T.  
Krafczyk, Manfred  
Institut
Fluiddynamik und Schiffstheorie M-8  
TORE-URI
http://hdl.handle.net/11420/3322
Journal
Computers and mathematics with applications  
Volume
65
Issue
2
Start Page
211
End Page
229
Citation
Computers and Mathematics with Applications 2 (65): 211-229 (2013-01-01)
Contribution to Conference
The 7th International Conference for Mesoscopic Methods in Engineering and Science, ICMMES-2010  
Publisher DOI
10.1016/j.camwa.2012.05.012
Scopus ID
2-s2.0-84872114734
Publisher
Elsevier Science
In this paper, we present extensions, extensive validations and applications of our previously published hybrid volume-of-fluid-based (VOF) model for the simulation of free-surface flow problems. For the solution of the flow field, the lattice Boltzmann method is used, where the free surface is represented by a VOF approach. The advection equation for the VOF fill level is discretized with a finite volume method, on the basis of a 3D Piecewise Linear Interface Reconstruction (PLIC) algorithm. The model is validated for several standard free surface benchmarks, such as breaking dam scenarios and a free falling jet. Finally, the hybrid algorithm is applied to the simulation of a wave breaking by overturning during shoaling, which is considered to be a demanding test case, especially for VOF solvers. In this case, the flow field is initialized early in the shoaling process with a solitary wave solution from inviscid, irrotational potential flow. The wave breaking process is then simulated with the 3D transient and turbulent LBM-VOF solver. All validation and benchmark tests confirm the accuracy of the proposed hybrid model.
Subjects
Free surface
Lattice Boltzmann method
PLIC
Plunging breaker
Potential flow
Volume of fluid
DDC Class
530: Physik
600: Technik
620: Ingenieurwissenschaften
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