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Flow enhancement of water-based nanoparticle dispersion through microscale sedimentary rocks.

ABSTRACT: Understanding and controlling fluids flow at the microscale is a matter of growing scientific and technological interest. Flow enhancements of water-based nanoparticle dispersions through microscale porous media are investigated through twelve hydrophilic sedimentary rocks with pore-throat radius between 1.2 and 10 ?m, which are quantitatively explained with a simple model with slip length correction for Darcy flow. Both as wetting phase, water exhibited no-slip Darcy flow in all cores; however, flow enhancement of nanoparticle dispersions can be up to 5.7 times larger than that of water, and it increases with the decreasing of pore-throat radius. The experimental data reveals characteristic slip lengths are of order 500 and 1000 nm for 3M® and HNPs-1 nanoparticles, respectively, independent of the lithology or nanoparticle concentration or shear rate. Meanwhile, the phenomenon of flow degradation is observed for HNPs-2 nanoparticles. These results explore the feasible application of using nanoparticle dispersions to control flow at the microscale.

SUBMITTER: Yu H 

PROVIDER: S-EPMC4346797 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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Flow enhancement of water-based nanoparticle dispersion through microscale sedimentary rocks.

Yu Haiyang H   He Youwei Y   Li Peng P   Li Shuang S   Zhang Tiantian T   Rodriguez-Pin Elena E   Du Song S   Wang Chenglong C   Cheng Shiqing S   Bielawski Christopher W CW   Bryant Steven L SL   Huh Chun C  

Scientific reports 20150303

Understanding and controlling fluids flow at the microscale is a matter of growing scientific and technological interest. Flow enhancements of water-based nanoparticle dispersions through microscale porous media are investigated through twelve hydrophilic sedimentary rocks with pore-throat radius between 1.2 and 10 μm, which are quantitatively explained with a simple model with slip length correction for Darcy flow. Both as wetting phase, water exhibited no-slip Darcy flow in all cores; however,  ...[more]