6533b86ffe1ef96bd12ce687
RESEARCH PRODUCT
Transport properties of heterogeneous materials. Combining computerised X-ray micro-tomography and direct numerical simulations
Maxime DecainJean-francis BlochMarkku KatajaChristian GeindreauViivi KoivuKeijo Mattilasubject
Materials scienceMechanical EngineeringNumerical analysisComputational MechanicsX-rayLattice Boltzmann methodsFinite differenceEnergy Engineering and Power TechnologyAerospace EngineeringMechanicsCondensed Matter PhysicsPermeability (earth sciences)Classical mechanicsMechanics of MaterialsFluid dynamicsTomographyPorous mediumdescription
Feasibility of a method for finding flow permeability of porous materials, based on combining computerised X-ray micro-tomography and numerical simulations, is assessed. The permeability is found by solving fluid flow through the complex 3D pore structures obtained by tomography for actual material samples. We estimate overall accuracy of the method and compare numerical and experimental results. Factors contributing to uncertainty of the method include numerical error arising from the finite resolution of tomographic images and the rather small sample size available with the present tomographic techniques. The total uncertainty of computed values of permeability is, however, not essentially larger than that of experimental results. We conclude that the method provides a feasible alternative for finding fluid flow properties of the kind of materials studied. It can be used to estimate all components of permeability tensor and is useful in cases where direct measurements are not achievable. Analogous metho...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-12-01 | International Journal of Computational Fluid Dynamics |