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Modeling two-phase flow in a micro-model with local thermal non-equilibrium on the Darcy scale
- Source :
- International Journal of Heat and Mass Transfer, 88, 822. Elsevier Limited
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Loosening local equilibrium assumptions in two-phase flow in porous media gives rise to new, unknown variables. More specifically, when loosening the local thermal equilibrium assumption, one has to describe the heat transfer between multiple phases, present at the same mathematical point. In this paper, we calibrate a macro-scale mathematical model which is free of local equilibrium assumptions to experimental observations. We emphasize the correct determination and upscaling of necessary input parameters from the experimental data achieved by image analysis. By choosing an appropriate scaling parameter, we are able to reproduce experimental measurements satisfactorily. This is a first step towards quantifying heat transfer in two-phase flow in porous media. Ultimately, our aim is to find the limits of the applicability of local equilibrium assumptions in two-phase flow in porous media.
- Subjects :
- Fluid Flow and Transfer Processes
Thermal equilibrium
Scale (ratio)
Determination of constitutive relations
Model calibration
Mechanical Engineering
Local equilibrium assumptions
Macro-scale non-equilibrium model
Mechanics
Condensed Matter Physics
Image analysis
Theoretical physics
Flow (mathematics)
Two-phase flow in porous media
Heat transfer
Local thermal non-equilibrium
Point (geometry)
Two-phase flow
Porous medium
Scaling
Mathematics
Subjects
Details
- ISSN :
- 00179310
- Volume :
- 88
- Database :
- OpenAIRE
- Journal :
- International Journal of Heat and Mass Transfer
- Accession number :
- edsair.doi.dedup.....e01e9c0089cf4269b2f78009ff1cea57