Concept

Boltzmann equation

Related publications (102)

Linking drainage front morphology with gaseous diffusion in unsaturated porous media: A lattice Boltzmann study

The effect of drainage front morphology on gaseous diffusion through partially saturated porous media is analyzed using the lattice Boltzmann method (LBM). Flow regimes for immiscible displacement in porous media have been characterized as stable displacem ...

2006

Sintering of NaCl powder: Mechanisms and first stage kinetics

Andreas Mortensen, Jean-François Despois

Isothermal NaCl sintering experiments are conducted between 500 and 790 degrees C on powders 75, 100, 150 and 400 mu m in average diameter. Along with literature data, the results are compared with theoretical predictions for the initial stage of sintering ...

2006

Plasma rotation and momentum transport studies at JET

An experimental study in plasma rotation and momentum transport was carried out at JET. The toroidal rotation profile was found to scale approximately with that of the ion temperature. However, significant deviations from this were found in high density EL ...

2006

Edge stabilization for the generalized Stokes problem: A continuous interior penalty method

Erik Burman

In this note we introduce and analyze a stabilized finite element method for the generalized Stokes equation. Stability is obtained by adding a least squares penalization of the gradient jumps across element boundaries. The method can be seen as a higher o ...

2006

Impact of Liquid Configuration and Flow Regimes on Macroscopic Transport Properties in Unsaturated Porous Media: A Lattice Boltzmann Study

Dani Or

The effect of flow regime and fluid morphology (distribution and spatial arrangement) on macroscopic transport properties (effective diffusion coefficient, hydraulic conductivity) was analyzed using a multi-component lattice Boltzmann model. Various flow r ...

2005

Numerical simulation of the motion of a two-dimensional glacier

Jacques Rappaz, Marco Picasso, Martin Funk

The motion of a two-dimensional glacier is considered. At each time step, given the shape of the glacier, ice is modelled as an incompressible non-Newtonian fluid and a non-linear elliptic problem has to be solved to obtain the horizontal velocity field. T ...

2004

Transition from strong to weak coupling and the onset of lasing in semiconductor microcavities

Raphaël Butté

Angular-dependent emission spectra are investigated in a strongly coupled InGaAs-GaAs-AlAs-based semiconductor microcavity as a function of excitation intensity and of detuning between the uncoupled exciton and photon modes. Under conditions of nonresonant ...

2002

A detailed analysis of ambipolar diffusion in nanostructured metal oxide films

Ulf Anders Hagfeldt

A transport equation is derived which describes the behavior of the nanostructured metal oxide films in a photoelectrochem. cell. A detailed anal. of the charge compensation mechanism necessarily leads to a transport equation with characteristics similar t ...

2002

PARTICLE FIELDS OF ICE SLURRIES WITH STRATIFICATIONS AND MELTING

Didier Albert Simon Vuarnoz

Results on isothermal stratification of ice particles in ice slurry storage tanks are presented. Furthermore - in an extension - the melting of ice particles by heat fluxes across the boundaries of storage vessels is also taken into consideration. A conser ...

2002

Viscoelastic fluid models derived from kinetic equations for polymers

Marco Picasso

Differential relationships between velocity and stress are derived from the kinetic theory of polymeric liquids. The Fokker-Planck equation corresponding to the so-called dumbbell theory for dilute solutions of polymers is considered. A Chapman-Enskog expa ...

2002

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