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 | URI: | http://hdl.handle.net/11420/3322 | ISSN: | 0898-1221 | Journal: | Computers and mathematics with applications | Institute: | Fluiddynamik und Schiffstheorie M-8 | Document Type: | Chapter/Article (Proceedings) |
Appears in Collections: | Publications without fulltext |
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