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Dynamic effects in capillary pressure relationships for two-phase flow in porous media: Experiments and numerical analyses

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posted on 2014-10-30, 13:59 authored by Diganta DasDiganta Das, Mahsanam Mirzaei
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.

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 Journal

Volume

58

Issue

12

Pages

3891 - 3903

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.

Publisher

© 2012 The Authors. AIChE Journal, published by Wiley on behalf of the AIChE

Version

  • 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

2012

Notes

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

0001-1541

eISSN

1547-5905

Language

  • en

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