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Dynamic effects in capillary pressure relationships for two-phase flow in porous media: Experiments and numerical analyses
journal contribution
posted on 2014-10-30, 13:59 authored by Diganta DasDiganta Das, Mahsanam MirzaeiWell 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.
Funding
EPSRC (UK) Project GR/S94315/01, "microheterogeneity and temperature effects on dynamic capillary pressure-saturation relationships for two-phase flow in porous media"
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
AIChE JournalVolume
58Issue
12Pages
3891 - 3903Citation
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.Publisher
© 2012 The Authors. AIChE Journal, published by Wiley on behalf of the AIChEVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/Publication date
2012Notes
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.ISSN
0001-1541eISSN
1547-5905Publisher version
Language
- en