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Modeling variability in porescale multiphase flow experiments
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DOI：10.1016/j.advwatres.2017.04.005.png)
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摘要
En 中文
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 rates. Stochastic simulations are able to capture variability in the experiments associated with the varying pump injection rate. (C) 2017 Published by Elsevier Ltd.
Keyword:
Multiphase flow experiments
Pore-scale simulation
Volume of fluids
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4.6K
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1.5W
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