Publisher DOI: 10.1016/j.camwa.2012.05.012
Title: On enhanced non-linear free surface flow simulations with a hybrid LBM-VOF model
Language: English
Authors: Janßen, Christian Friedrich  
Grilli, Stephan T. 
Krafczyk, Manfred 
Keywords: Free surface; Lattice Boltzmann method; PLIC; Plunging breaker; Potential flow; Volume of fluid
Issue Date: 2-Jul-2012
Publisher: Elsevier Science
Source: Computers and Mathematics with Applications 2 (65): 211-229 (2013-01-01)
Abstract (english): 
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.
Conference: The 7th International Conference for Mesoscopic Methods in Engineering and Science, ICMMES-2010 
ISSN: 0898-1221
Journal: Computers and mathematics with applications 
Institute: Fluiddynamik und Schiffstheorie M-8 
Document Type: Chapter/Article (Proceedings)
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