• An adaptive scheme using hiera...

Treffer: An adaptive scheme using hierarchical grids for lattice Boltzmann multi-phase flow simulations

Title:
An adaptive scheme using hierarchical grids for lattice Boltzmann multi-phase flow simulations
Authors:
TÖLKE, Jonas, FREUDIGER, Sören, KRAFCZYK, Manfred
Source:
Proceedings of the First International Conference for Mesoscopic Methods in Engineering and Science (ICMMES), Braunschweig, Germany, July 25-30, 2004Computers & fluids. 35(8-9):820-830
Publisher Information:
Oxford: Elsevier Science, 2006.
Publication Year:
2006
Physical Description:
print, 30 ref
Original Material:
INIST-CNRS
Subject Terms:
Mechanics acoustics, Mécanique et acoustique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Mécanique des fluides, Fluid dynamics, Méthodes de calcul en mécanique des fluides, Computational methods in fluid dynamics, Ecoulements non homogènes, Nonhomogeneous flows, Gouttes et bulles, Drops and bubbles, Ascension bulle, Bubble ascent, Ascension burbuja, Bulle, Bubbles, Equation Boltzmann, Boltzmann equation, Génération maille, Mesh generation, Modèle réticulaire, Lattice model, Modelo reticular, Mécanique fluide numérique, Computational fluid dynamics, Méthode adaptative, Adaptive method, Método adaptativo, Simulation numérique, Digital simulation, Système hiérarchisé, Hierarchical systems, Système mésoscopique, Mesoscopic systems
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Institut für Computeranwendungen im Bauingenieurwesen, TU Braunschweig, Germany
ISSN:
0045-7930
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=17868476
Rights:
Copyright 2006 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Physics: fluid mechanics
Accession Number:
edscal.17868476
Database:
PASCAL Archive

Weitere Informationen

The lattice Boltzmann (LB) method is extended and adapted to simulate multi-phase flows on non-uniform tree-type grids. Our model is an extension of the model developed by Gunstensen [Gunstensen AK, Rothman D. Lattice Boltzmann model of immiscible fluids. Phys Rev A 1991;43(8):4320-4327], which is based on the Rothman-Keller model [Rothman DH, Keller JM. Immiscible cellular automaton fluids. J Stat Phys 1988;52:1119-1127]. A first approach we use an a priori grid refinement. We find that the maximum number of possible grid levels for problems with dominant capillary forces is very restricted, if the physical interface is allowed to pass over grid interfaces. Thus a second approach based on adaptive grids was developed, where the physical interface is always discretized on the finest grid level. Efficient and flexible data structures have been developed to manage the remeshing. The application of the scheme for a rising bubble in three dimensions shows very good agreement with the semi-analytical solution and demonstrates the efficiency of our approach.