Results 261 to 270 of about 18,671,976 (307)

Approaches for modeling longitudinal dispersion in pore-networks

Advances in Water Resources, 2007
The purpose of this study is to quantify the dispersivity in the longitudinal direction by upscaling pore scale mixing over a network domain and to verify the dispersivity with that obtained through the more rigorous upscaling technique, the Brownian particle tracking model (BPTM).
Acharya, R.C., van der Zee, S.E.A.T.M., Leijnse, A.   +2 more
openaire   +2 more sources

Random pore-network model for polymer electrolyte membranes

Soft Matter, 2021
Flow reversal (“back diffusion”) in Nafion: electro-osmotic coefficient as a function of humidification levels at anode and cathode.
Peter Berg, Philippe Nadon
openaire   +2 more sources

A Study of the Effect of Pore Characteristic on Permeability With a Pore Network Model

Petroleum Science and Technology, 2013
Porosity represents amount of pore, but the distribution of these pores is more important to percolation. The authors get core images from a computed tomography experiment of real rock core and use multiple point geological statistics to simulate 12 samples of digital core.
T. Zhang, D. Li, J. Yang, D. Lu
openaire   +1 more source

Predictive Pore-Scale Network Modeling

SPE Annual Technical Conference and Exhibition, 2003
Abstract We show how to predict flow properties for a variety of rocks using pore-scale modeling with geologically realistic networks. Starting with a network representation of Berea sandstone the pore-size distribution is adjusted to match mercury injection capillary pressure for different rock types, keeping the rank order of pore ...
Per H. Valvatne, Martin J. Blunt
openaire   +1 more source

A pore creation in a triangular network model membrane

Computational Biology and Chemistry, 2008
Membrane electroporation seems to be a useful method for delivery of biological active compounds into the cell. Although it is known that this phenomenon is sensitive to the electric field intensity, duration of the electric pulse and its shape, it is not fully understood.
openaire   +2 more sources

Insights into In-situ Combustion by Analytical and Pore-network Modeling

Proceedings of SPE/PS-CIM/CHOA International Thermal Operations and Heavy Oil Symposium, 2005
Abstract In-situ combustion is a subject of continuing interest due to its rich interplay of flow, mass/heat transfer and reactions. The process complexity, however, has precluded its thorough understanding. In this paper, we provide some analytical results and pore-network simulations that explore fundamental aspects of this process.
I. Y. Akkutlu, C. Lu, Y. C. Yortsos
openaire   +1 more source

Modeling of Drying Processes in Pore Networks

2006
Drying in porous structures is simulated with a 2-D pore network model that accounts for various processes at the pore-scale (mass transfer by advection and diffusion in the gas phase, viscous flow in liquid and gas phases and capillary effects at the gas-liquid interface).
A.G. Yiotis, A.K. Stubos, A.G. Boudouvis, I.N. Tsimpanogiannis, Y.C. Yortsos   +4 more
openaire   +1 more source

Pore‐network modeling of biofilm evolution in porous media

Biotechnology and Bioengineering, 2011
AbstractThe influence of bacterial biomass on hydraulic properties of porous media (bioclogging) has been explored as a viable means for optimizing subsurface bioremediation and microbial enhanced oil recovery. In this study, we present a pore network simulator for modeling biofilm evolution in porous media including hydrodynamics and nutrient ...
C C, Ezeuko, A, Sen, A, Grigoryan, I D, Gates   +3 more
openaire   +2 more sources

Pore-Network Model for Geo-Materials

2018
Pore-network model is a convenient tool to investigate the micromechanics of seepage in porous media. Geo-materials are typical porous media, including the different types of soils and rocks from rock-fill with mm-scale pores with high connectivity to gas shale with nm-scale pores and little connectivity.
Liming Hu, Haohao Guo, Pengwei Zhang, Dongming Yan   +3 more
openaire   +1 more source

Dynamic Pore-Network Models Development

2019
A two-pressure dynamic drainage algorithm is developed for three-dimensional unstructured network model. The impact of time step is discussed through drainage simulations. Dynamic effects in average phase pressure for fluid phases with different viscosity ratios are explored using the developed code as an upscaling tool. For cases where two fluids have
X. Yin, E. T. de Vries, A. Raoof, S. M. Hassanizadeh   +3 more
openaire   +1 more source