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73 550 (0,149s)

Výsledek výzkumu

Higher order semi-implicit discontinuous Galerkin finite element schemes for nonlinear convection-diffusion problems

Higher order semi-implicit discontinuous Galerkin finite element schemes for nonlinear convection-diffusion problems...

BK - Mechanika tekutin

  • 2006
  • D
Výsledek výzkumu

Solution of time-dependent convection-diffusion equations with the aid of higher order adaptive methods with respect to space and time

Solution of time-dependent convection-diffusion equations with the aid of higher order adaptive methods with respect to space and time....

BK - Mechanika tekutin

  • 2006
  • D
Výsledek výzkumu

Antidissipative Numerical Schemes for the Anisotropic Diffusion Operator in Problems for the Allen-Cahn Equation

equation with anisotropy incorporated into the diffusion operator. In the first case, a weighted first order finite difference scheme is used for spatial discretization of the anisotropic texture diffusion problem in 2D, d...

BA - Obecná matematika

  • 2009
  • D
Výsledek výzkumu

The surface collective diffusion coefficient and diffuse phase transformations

We study the temperature dependence of the collective diffusion coefficient Dc(T) of adsorbed particles during a diffuse first-order phase transformation....

BM - Fyzika pevných látek a magnetismus

  • 2008
  • Jx
Výsledek výzkumu

Interplay between steps and nonequilibrium effects in surface diffusion for a lattice-gas model of O/W (110

The authors consider the influence and nonequilibrium conditions on surface diffusion in a strongly interacting surface adsorbate system. The collective diffusion then depends on two competing factors: domain growth within the o...

BM - Fyzika pevných látek a magnetismus

  • 2007
  • Jx
Výsledek výzkumu

Self-diffusion in a lamellar and gyroid (ordered) diblock copolymer investigated using pulsed field gradient NMR.

We report about self-diffusion experiments on a compositionally asymmetric poly(ethylene-co-propylene)-block-poly(dimethylsiloxane) diblock copolymer exhibiting the lamellar and the gyroid morphology. The most probable self-diffusion

CD - Makromolekulární chemie

  • 2001
  • Jx
Výsledek výzkumu

Role of humic acids in transport of charge organic compounds as revealed by combination of simple laboratory diffusion techniques

evaluation. Diffusion-cell and in-diffusion experiments have been performed in order to determine the effective diffusion coefficients of the model charged organic compounds recently focus on utilization of simple...

CF - Fyzikální chemie a teoretická chemie

  • 2015
  • O
Výsledek výzkumu

Determination of the diffusion coefficient of water into atelocollagen type I thin films by attenuated total reflection Fourier transform infrared spectroscopy

The diffusion coefficient of water into thin polymer layers of glutar aldehyde of the crosslinking agent (sample 2) the diffusion coefficient was 2.795x10-10 m2s-1. This increase was more ordered attributed to the more ...

CF - Fyzikální chemie a teoretická chemie

  • 2000
  • Jx
Výsledek výzkumu

Combined higher order finite volume and finite elment scheme for double porosity and non-linear adsorbtion of transport problem in porous media

-diffusion equation including equilibrium adsorption to the reaction combined with a first-order equation for the non-equilibrium adsorption interaction processes. The numerical scheme for solving this model involves a combined high...

BA - Obecná matematika

  • 2011
  • Jx
  • Odkaz
Výsledek výzkumu

Optimal error estimates for nonstationary singularly perturbed problems for low discretization orders

Nonstationary 1D singularly perturbed convection-diffusion equation is discretized in space by the finite element method on a Shishkin mesh and by time discontinuous Galerkin method. The resulting scheme is analyzed and diffusion-un...

BA - Obecná matematika

  • 2012
  • Jx
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