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Title: Dynamic effects in capillary pressure relationships for two-phase flow in porous media: Experiments and numerical analyses
Authors: Das, Diganta Bhusan
Mirzaei, Mahsanam
Keywords: Two-phase flow
Porous media
Transient flow
Quasi-static flow
Capillary pressure
Saturation
Dynamic effect
Issue Date: 2012
Publisher: © 2012 The Authors. AIChE Journal, published by Wiley on behalf of the AIChE
Citation: DAS, D.B. and MIRZAEI, M., 2012. Dynamic effects in capillary pressure relationships for two-phase flow in porous media: Experiments and numerical analyses. AIChE Journal, 58 (12), pp. 3891 - 3903.
Abstract: Well defined experiments and numerical analyses are conducted to determine the importance of dynamic effect in capillary pressure relationships for two-phase flow in porous media. Dynamic and quasi-static capillary pressure-saturation (P -S ) and, ∂S /∂t-t curves are determined. These are then used to determine the dynamic effects, indicated by a dynamic coefficient (τ) in the porous domains which establishes the speed at which flow equilibrium (∂S /∂t = 0) is reached. τ is found to be a nonlinear function of saturation which also depends on the medium permeability. Locally determined τ seems to increase as the distance of the measurement point from the fluid inlet into the domain increases. However, the functional dependence τ-S follows similar trends at different locations within the domain. We argue that saturation weighted average of local τ-S curves can be defined as an effective τ-S curve for the whole domain which follows an exponential trend too.
Description: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Sponsor: EPSRC (UK) Project GR/S94315/01, "microheterogeneity and temperature effects on dynamic capillary pressure-saturation relationships for two-phase flow in porous media"
Version: Published
DOI: 10.1002/aic.13777
URI: https://dspace.lboro.ac.uk/2134/16153
Publisher Link: http://dx.doi.org/10.1002/aic.13777
ISSN: 0001-1541
Appears in Collections:Published Articles (Chemical Engineering)

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