Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks

Abstract In this work, wall slipping behavior of foam with nanoparticle-armored bubbles was first studied in a capillary tube and the novel multiphase foam was characterized by a slipping law. A crack model with a cuboid geometry was then used to compare with the foam slipping results from the capil...

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Autores principales:	Qichao Lv, Zhaomin Li, Binfei Li, Maen Husein, Dashan Shi, Chao Zhang, Tongke zhou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5b49faa2085d45b5b54c42f1db6d5785
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spelling	oai:doaj.org-article:5b49faa2085d45b5b54c42f1db6d57852021-12-02T15:06:01ZWall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks10.1038/s41598-017-05441-72045-2322https://doaj.org/article/5b49faa2085d45b5b54c42f1db6d57852017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05441-7https://doaj.org/toc/2045-2322Abstract In this work, wall slipping behavior of foam with nanoparticle-armored bubbles was first studied in a capillary tube and the novel multiphase foam was characterized by a slipping law. A crack model with a cuboid geometry was then used to compare with the foam slipping results from the capillary tube and also to evaluate the flow resistance factor of the foam. The results showed that the slipping friction force F FR in the capillary tube significantly increased by addition of modified SiO2 nanoparticles, and an appropriate power law exponents by fitting F FR vs. Capillary number, Ca, was 1/2. The modified nanoparticles at the surface were bridged together and formed a dense particle “armor” surrounding the bubble, and the interconnected structures of the “armor” with strong steric integrity made the surface solid-like, which was in agreement with the slip regime associated with rigid surface. Moreover, as confirmed by 3D microscopy, the roughness of the bubble surface increased with nanoparticle concentration, which in turn increased the slipping friction force. Compared with pure SDBS foam, SDBS/SiO2 foam shows excellent stability and high flow resistance in visual crack. The resistance factor of SiO2/SDBS foam increased as the wall surface roughness increased in core cracks.Qichao LvZhaomin LiBinfei LiMaen HuseinDashan ShiChao ZhangTongke zhouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qichao Lv Zhaomin Li Binfei Li Maen Husein Dashan Shi Chao Zhang Tongke zhou Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
description	Abstract In this work, wall slipping behavior of foam with nanoparticle-armored bubbles was first studied in a capillary tube and the novel multiphase foam was characterized by a slipping law. A crack model with a cuboid geometry was then used to compare with the foam slipping results from the capillary tube and also to evaluate the flow resistance factor of the foam. The results showed that the slipping friction force F FR in the capillary tube significantly increased by addition of modified SiO2 nanoparticles, and an appropriate power law exponents by fitting F FR vs. Capillary number, Ca, was 1/2. The modified nanoparticles at the surface were bridged together and formed a dense particle “armor” surrounding the bubble, and the interconnected structures of the “armor” with strong steric integrity made the surface solid-like, which was in agreement with the slip regime associated with rigid surface. Moreover, as confirmed by 3D microscopy, the roughness of the bubble surface increased with nanoparticle concentration, which in turn increased the slipping friction force. Compared with pure SDBS foam, SDBS/SiO2 foam shows excellent stability and high flow resistance in visual crack. The resistance factor of SiO2/SDBS foam increased as the wall surface roughness increased in core cracks.
format	article
author	Qichao Lv Zhaomin Li Binfei Li Maen Husein Dashan Shi Chao Zhang Tongke zhou
author_facet	Qichao Lv Zhaomin Li Binfei Li Maen Husein Dashan Shi Chao Zhang Tongke zhou
author_sort	Qichao Lv
title	Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
title_short	Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
title_full	Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
title_fullStr	Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
title_full_unstemmed	Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
title_sort	wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5b49faa2085d45b5b54c42f1db6d5785
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Wall slipping behavior of foam with nanoparticle-armored bubbles and its flow resistance factor in cracks

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