Unitary Qubit Lattice Gas Representation of 2D and 3D Quantum Turbulence

Digital Physics is a new extension of the lattice-gas concept for the simulation of fluid flow which removes disadvantages that prevented practical application of the original method. The extensions are summarized. Simulation results for a three-speed model demonstrate the absence of artifacts and significant reduction in viscosity. Also, simulation results for 2D and 3D lid-driven cavities for a range of Reynolds numbers and geometries are compared with experiment, CFD and the lattice-Boltzmann BGK method. Accurate results are obtained with the new method.

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2D and 3D Lattice Gas Techniques for Fluid-Dynamics Simulations

Cellular Automata: Research Towards Industry ◽

10.1007/978-1-4471-1281-5_7 ◽

1998 ◽

pp. 67-79 ◽

Cited By ~ 3

Author(s):

C. Borsani ◽

G. Cattaneo ◽

V. De Mattei ◽

U. Jocher ◽

B. Zampini

Keyword(s):

Fluid Dynamics ◽

Lattice Gas ◽

Dynamics Simulations ◽

2D And 3D

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Quantum Lattice-Gas Algorithm for Quantum Turbulence - CAP Simulations on 12,288 Cores of Cray XT-5 Einstein at NAVO

2009 DoD High Performance Computing Modernization Program Users Group Conference ◽

10.1109/hpcmp-ugc.2009.20 ◽

2009 ◽

Author(s):

George Vahala ◽

Jeffrey Yepez ◽

Min Soe ◽

Linda Vahala ◽

Sean Ziegeler

Keyword(s):

Lattice Gas ◽

Quantum Turbulence ◽

Quantum Lattice ◽

Quantum Lattice Gas

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Simulations of Single-Fluid Flow in Porous Media

International Journal of Modern Physics C ◽

10.1142/s0129183198001369 ◽

1998 ◽

Vol 09 (08) ◽

pp. 1505-1521 ◽

Cited By ~ 36

Author(s):

A. Koponen ◽

M. Kataja ◽

J. Timonen ◽

D. Kandhai

Keyword(s):

Porous Media ◽

Fluid Flow ◽

Lattice Gas ◽

Effective Porosity ◽

Flow In Porous Media ◽

Lattice Boltzmann Simulations ◽

Porosity And Permeability ◽

Flow Through ◽

2D And 3D ◽

Good Agreement

Several results of lattice-gas and lattice-Boltzmann simulations of single-fluid flow in 2D and 3D porous media are discussed. Simulation results for the tortuosity, effective porosity and permeability of a 2D random porous medium are reported. A modified Kozeny–Carman law is suggested, which includes the concept of effective porosity. This law is found to fit well the simulated 2D permeabilities. The results for fluid flow through large 3D random fibre webs are also presented. The simulated permeabilities of these webs are found to be in good agreement with experimental data. The simulations also confirm that, for this kind of materials, permeability depends exponentially on porosity over a large porosity range.

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Unitary quantum lattice gas representation of 2D quantum turbulence

10.1117/12.883715 ◽

2011 ◽

Author(s):

Bo Zhang ◽

George Vahala ◽

Linda Vahala ◽

Min Soe

Keyword(s):

Lattice Gas ◽

Quantum Turbulence ◽

Quantum Lattice ◽

Quantum Lattice Gas

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Analysis of 2D and 3D defects associated with precipitation of Cu in silicon

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010008866x ◽

1991 ◽

Vol 49 ◽

pp. 870-871

Author(s):

P.M. Rice ◽

MJ. Kim ◽

R.W. Carpenter

Keyword(s):

Colony Growth ◽

Dark Field ◽

Dark Side ◽

Silicide Phase ◽

Strain Fields ◽

Near Surface ◽

Unknown Composition ◽

Secondary Precipitates ◽

20 Nm ◽

2D And 3D

Extrinsic gettering of Cu on near-surface dislocations in Si has been the topic of recent investigation. It was shown that the Cu precipitated hetergeneously on dislocations as Cu silicide along with voids, and also with a secondary planar precipitate of unknown composition. Here we report the results of investigations of the sense of the strain fields about the large (~100 nm) silicide precipitates, and further analysis of the small (~10-20 nm) planar precipitates.Numerous dark field images were analyzed in accordance with Ashby and Brown's criteria for determining the sense of the strain fields about precipitates. While the situation is complicated by the presence of dislocations and secondary precipitates, micrographs like those shown in Fig. 1(a) and 1(b) tend to show anomalously wide strain fields with the dark side on the side of negative g, indicating the strain fields about the silicide precipitates are vacancy in nature. This is in conflict with information reported on the η'' phase (the Cu silicide phase presumed to precipitate within the bulk) whose interstitial strain field is considered responsible for the interstitial Si atoms which cause the bounding dislocation to expand during star colony growth.

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Covalent organic frameworks: an ideal platform for designing ordered materials and advanced applications

Chemical Society Reviews ◽

10.1039/d0cs00620c ◽

2021 ◽

Author(s):

Ruoyang Liu ◽

Ke Tian Tan ◽

Yifan Gong ◽

Yongzhi Chen ◽

Zhuoer Li ◽

...

Keyword(s):

Covalent Organic Frameworks ◽

2D And 3D ◽

Advanced Applications

Covalent organic frameworks offer a molecular platform for integrating organic units into periodically ordered yet extended 2D and 3D polymers to create topologically well-defined polygonal lattices and built-in discrete micropores and/or mesopores.

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