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Title: Modeling variability in porescale multiphase flow experiments

Abstract

Microfluidic devices and porescale numerical models are commonly used to study multiphase flow in biological, geological, and engineered porous materials. In this work, we perform a set of drainage and imbibition experiments in six identical microfluidic cells to study the reproducibility of multiphase flow experiments. We observe significant variations in the experimental results, which are smaller during the drainage stage and larger during the imbibition stage. We demonstrate that these variations are due to sub-porescale geometry differences in microcells (because of manufacturing defects) and variations in the boundary condition (i.e.,fluctuations in the injection rate inherent to syringe pumps). Computational simulations are conducted using commercial software STAR-CCM+, both with constant and randomly varying injection rate. Stochastic simulations are able to capture variability in the experiments associated with the varying pump injection rate.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1371984
Report Number(s):
PNNL-SA-122395
Journal ID: ISSN 0309-1708; 47585; KJ0401000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Advances in Water Resources; Journal Volume: 105; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; microfluidic flow cell; porescale flow; multiphase flow; Environmental Molecular Sciences Laboratory

Citation Formats

Ling, Bowen, Bao, Jie, Oostrom, Mart, Battiato, Ilenia, and Tartakovsky, Alexandre M. Modeling variability in porescale multiphase flow experiments. United States: N. p., 2017. Web. doi:10.1016/j.advwatres.2017.04.005.
Ling, Bowen, Bao, Jie, Oostrom, Mart, Battiato, Ilenia, & Tartakovsky, Alexandre M. Modeling variability in porescale multiphase flow experiments. United States. doi:10.1016/j.advwatres.2017.04.005.
Ling, Bowen, Bao, Jie, Oostrom, Mart, Battiato, Ilenia, and Tartakovsky, Alexandre M. Sat . "Modeling variability in porescale multiphase flow experiments". United States. doi:10.1016/j.advwatres.2017.04.005.
@article{osti_1371984,
title = {Modeling variability in porescale multiphase flow experiments},
author = {Ling, Bowen and Bao, Jie and Oostrom, Mart and Battiato, Ilenia and Tartakovsky, Alexandre M.},
abstractNote = {Microfluidic devices and porescale numerical models are commonly used to study multiphase flow in biological, geological, and engineered porous materials. In this work, we perform a set of drainage and imbibition experiments in six identical microfluidic cells to study the reproducibility of multiphase flow experiments. We observe significant variations in the experimental results, which are smaller during the drainage stage and larger during the imbibition stage. We demonstrate that these variations are due to sub-porescale geometry differences in microcells (because of manufacturing defects) and variations in the boundary condition (i.e.,fluctuations in the injection rate inherent to syringe pumps). Computational simulations are conducted using commercial software STAR-CCM+, both with constant and randomly varying injection rate. Stochastic simulations are able to capture variability in the experiments associated with the varying pump injection rate.},
doi = {10.1016/j.advwatres.2017.04.005},
journal = {Advances in Water Resources},
number = C,
volume = 105,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}