scholarly journals Large-scale lattice Boltzmann simulations of complex fluids: advances through the advent of computational Grids

2005 ◽  
Vol 363 (1833) ◽  
pp. 1895-1915 ◽  
Author(s):  
Jens Harting ◽  
Jonathan Chin ◽  
Maddalena Venturoli ◽  
Peter V Coveney
Keyword(s):  
Lattice Boltzmann ◽  
Large Scale ◽  
Three Dimensional ◽  
Fluid Flows ◽  
Scientific Work ◽  
Computational Grids ◽  
Computational Steering ◽  
Lattice Boltzmann Simulations ◽  
Complex Fluid ◽  
Visualization Techniques

During the last 2.5 years, the RealityGrid project has allowed us to be one of the few scientific groups involved in the development of computational Grids. Since smoothly working production Grids are not yet available, we have been able to substantially influence the direction of software and Grid deployment within the project. In this paper, we review our results from large-scale three-dimensional lattice Boltzmann simulations performed over the last 2.5 years. We describe how the proactive use of computational steering, and advanced job migration and visualization techniques enabled us to do our scientific work more efficiently. The projects reported on in this paper are studies of complex fluid flows under shear or in porous media, as well as large-scale parameter searches, and studies of the self-organization of liquid cubic mesophases.

Comparison of numerical schemes for 3D lattice Boltzmann simulations of moving rigid particles in thermal fluid flows

2019 ◽  
Vol 356 ◽  
pp. 528-546 ◽  
Author(s):  
T. Rosemann ◽  
B. Kravets ◽  
S.R. Reinecke ◽  
H. Kruggel-Emden ◽  
M. Wu ◽  
...  
Keyword(s):  
Lattice Boltzmann ◽  
Fluid Flows ◽  
Numerical Schemes ◽  
Rigid Particles ◽  
Lattice Boltzmann Simulations

scholarly journals Large-scale lattice-Boltzmann simulations over lambda networks

2007 ◽  
Author(s):  
Radhika Saksena ◽  
Peter V. Coveney ◽  
Robin Pinning ◽  
Stephen Booth
Keyword(s):  
Lattice Boltzmann ◽  
Large Scale ◽  
Lattice Boltzmann Simulations

241 Large-scale phase-field lattice Boltzmann simulations of dendrite growth with melt convection

2015 ◽  
Vol 2015.28 (0) ◽  
pp. _241-1_-_241-2_
Author(s):  
Tomohiro Takaki ◽  
Shinji Sakane ◽  
Roberto Rojas ◽  
Munekazu Ohno ◽  
Yasushi ◽  
...  
Keyword(s):  
Phase Field ◽  
Lattice Boltzmann ◽  
Large Scale ◽  
Dendrite Growth ◽  
Lattice Boltzmann Simulations ◽  
Melt Convection

Numerical Simulation of Surface Roughness Effects in Laminar Lubrication Using the Lattice-Boltzmann Method

2007 ◽  
Vol 129 (3) ◽  
pp. 603-610 ◽  
Author(s):  
Gunther Brenner ◽  
Ahmad Al-Zoubi ◽  
Merim Mukinovic ◽  
Hubert Schwarze ◽  
Stefan Swoboda
Keyword(s):  
Velocity Field ◽  
Surface Texture ◽  
Lattice Boltzmann ◽  
Load Capacity ◽  
Three Dimensional ◽  
Hydrodynamic Characteristics ◽  
Real Surface ◽  
Roughness Effects ◽  
Lattice Boltzmann Simulations ◽  
Boltzmann Method

The effect of surface texture and roughness on shear and pressure forces in tribological applications in the lubrication regime is analyzed by means of lattice-Boltzmann simulations that take the geometry of real surface elements into account. Topographic data on representative surface structures are obtained with high spatial resolution with the application of an optical interference technique. The three-dimensional velocity field past these surfaces is computed for laminar flow of Newtonian fluids in the continuum regime. Subsequently, pressure and shear flow factors are obtained by evaluating the velocity field in accordance with the extended Reynolds equation of Patir and Cheng (1978, ASME J. Tribol., 100, pp. 12–17). The approach allows an efficient determination of the hydrodynamic characteristics of microstructured surfaces in lubrication. Especially, the influence of anisotropy of surface texture on the hydrodynamic load capacity and friction is determined. The numerical method used in the present work is verified for a simplified model configuration, the flow past a channel with sinusoidal walls. The results obtained indicate that full numerical simulations should be used to accurately and efficiently compute the characteristic properties of film flows past rough surfaces and may therefore contribute to a better understanding and prediction of tribological problems.

LATTICE BOLTZMANN SIMULATIONS OF DROP–DROP INTERACTIONS IN TWO-PHASE FLOWS

2005 ◽  
Vol 16 (01) ◽  
pp. 25-44 ◽  
Author(s):  
KANNAN N. PREMNATH ◽  
JOHN ABRAHAM
Keyword(s):  
Shear Flow ◽  
Lattice Boltzmann ◽  
Flow Model ◽  
Numerical Solutions ◽  
Three Dimensional ◽  
Drop Deformation ◽  
Simple Shear Flow ◽  
Two Phase ◽  
Lattice Boltzmann Simulations ◽  
Boltzmann Method

In this paper, three-dimensional computations of drop–drop interactions using the lattice Boltzmann method (LBM) are reported. The LBM multiphase flow model employed is evaluated for single drop problems and binary drop interactions. These include the verification of Laplace–Young relation for static drops, drop oscillations, and drop deformation and breakup in simple shear flow. The results are compared with experimental data, analytical solutions and numerical solutions based on other computational methods, as applicable. Satisfactory agreement is shown. Initial studies of drop–drop interactions involving the head-on collisions of drops in quiescent medium and off-center collision of drops in the presence of ambient shear flow are considered. As expected, coalescence outcome is observed for the range of parameters studied.

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