Naslov
Mitigating Resolution Problems in Numerical Modeling of Effective Transport Properties of Porous Materials

Autori
Ukrainczyk, Neven ; Koenders, Eduard A.B. ; van Breugel, Klaas

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Multi-Scale Modeling and Characterization of Infrastructure Materials Proceedings of the International RILEM Symposium Stockholm, June 2013 / Kringos, N ; Birgisson, B ; Frost, D ; Wang, L - Dordrecht : Heidelberg : New York (NY) : London : Springer, 2013, 369-381

ISBN
978-94-007-6877-2

Skup
International RILEM Symposium on Multi-Scale Modeling and Characterization of Infrastructure Materials

Mjesto i datum
Stockholm, Švedska, 10-12.06.013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Resolution refinement; Multi-scale modelling; Effective transport property; Porous materials; Cementitious materials.

Sažetak
Generating a realistic microstructure for a computational grid, which accurately represents heterogeneities while maintaining a computational efficiency, is still an unsolved problem. This paper presents a novel multi-scale approach to mitigate the resolution problems in numerical methods for calculating effective transport properties of porous materials using 3D digital images. The method up-scales sub-voxel information of the fractional occupancy of interface voxels (i.e. voxels con-taining phase-boundary) in order to increase the accuracy of the pore schematiza-tion and hence the accuracy of the numerical transport calculation as well. The method is validated on a simple periodic arrangement of mono-sized particles. The numerical algorithm is implemented within the Hymostruc platform (numerical model for cement hydration and microstructure development) and backed up with a 3D graphics visualization. The new approach significantly reduces computa-tional efforts, is easy to implement, and improves the accuracy of the transport property estimation.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Kemijsko inženjerstvo, Temeljne tehničke znanosti

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