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Tracking interface and common curve dynamics for two-fluid flow in porous media

Journal Article · · Journal of Fluid Mechanics
DOI:https://doi.org/10.1017/jfm.2016.212· OSTI ID:1255655
 [1];  [2];  [2];  [3]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  2. Univ. of North Carolina, Chapel Hill, NC (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Pore-scale studies of multiphase flow in porous medium systems can be used to understand transport mechanisms and quantitatively determine closure relations that better incorporate microscale physics into macroscale models. Multiphase flow simulators constructed using the lattice Boltzmann method provide a means to conduct such studies, including both the equilibrium and dynamic aspects. Moving, storing, and analyzing the large state space presents a computational challenge when highly-resolved models are applied. We present an approach to simulate multiphase flow processes in which in-situ analysis is applied to track multiphase flow dynamics at high temporal resolution. We compute a comprehensive set of measures of the phase distributions and the system dynamics, which can be used to aid fundamental understanding and inform closure relations for macroscale models. The measures computed include microscale point representations and macroscale averages of fluid saturations, the pressure and velocity of the fluid phases, interfacial areas, interfacial curvatures, interface and common curve velocities, interfacial orientation tensors, phase velocities and the contact angle between the fluid-fluid interface and the solid surface. Test cases are studied to validate the approach and illustrate how measures of system state can be obtained and used to inform macroscopic theory.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1255655
Journal Information:
Journal of Fluid Mechanics, Journal Name: Journal of Fluid Mechanics Vol. 796; ISSN applab; ISSN 0022-1120
Publisher:
Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

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Pore-scale modelling of Ostwald ripening journal November 2017
The Impact of Pore-Scale Flow Regimes on Upscaling of Immiscible Two-Phase Flow in Porous Media journal September 2018
Nonhysteretic Capillary Pressure in Two‐Fluid Porous Medium Systems: Definition, Evaluation, Validation, and Dynamics journal August 2019
Comprehensive comparison of pore-scale models for multiphase flow in porous media journal June 2019
Geometric state function for two-fluid flow in porous media journal August 2018
Beyond Darcy's law: The role of phase topology and ganglion dynamics for two-fluid flow journal October 2016
On the consistency of scale among experiments, theory, and simulation text January 2017
Toward a New Generation of Two-Fluid Flow Models Based on the Thermodynamically-Constrained Averaging Theory journal October 2019
On the Consistency of Scale Among Experiments, Theory, and Simulation journal September 2016
On the consistency of scale among experiments, theory, and simulation journal January 2017