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A Study to Investigate Fluid-Solid Interaction Effects on Fluid Flow in Micro Scales

Authors :
Renyi Cao
Mingqiang Chen
Linsong Cheng
Chaohui Lyu
Source :
Energies, Vol 11, Iss 9, p 2197 (2018), Energies; Volume 11; Issue 9; Pages: 2197
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

Due to micro-nanopores in tight formation, fluid-solid interaction effects on fluid flow in porous media cannot be ignored. In this paper, a novel model which can characterize micro-fluid flow in micro scales is proposed. This novel model has a more definite physical meaning compared with other empirical models. And it is validated by micro tube experiments. In addition, the application range of the model is rigorously analyzed from a mathematical view, which indicates a wider application scope. Based on the novel model, the velocity profile, the average flow velocity and flow resistance in consideration of fluid-solid interaction are obtained. Furthermore, the novel model is incorporated into a representative pore scale network model to study fluid-solid interactions on fluid flow in porous media. Results show that due to fluid-solid interaction in micro scales, the change rules of the velocity profile, the average flow velocity and flow resistance generate obvious deviations from traditional Hagen-Poiseuille’s law. The smaller the radius and the lower the displacement pressure gradient (∇P), the more obvious the deviations will be. Moreover, the apparent permeability in consideration of fluid-solid interaction is no longer a constant, it increases with the increase of ∇P and non-linear flow appears at low ∇P. This study lays a good foundation for studying fluid flow in tight formation.

Details

Language :
English
ISSN :
19961073
Volume :
11
Issue :
9
Database :
OpenAIRE
Journal :
Energies
Accession number :
edsair.doi.dedup.....1a3d0534ff9d79d0cbc36651d698e937