The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands
This study aims at understanding the interplay between the interfacial properties of the powder grains and the characteristics of the liquid flow used to disperse them, in order to obtain an effective dispersion of a powder in a liquid, avoiding air entrainment. The dispersion of grain “rafts” and p...
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ftdoajarticles:oai:doaj.org/article:5c93497cb47d4210909c68e0efa3a480 2023-05-15T18:03:17+02:00 The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands Ong Xin Yi Taylor Spencer E. Ramaioli Marco 2017-01-01T00:00:00Z https://doi.org/10.1051/epjconf/201714009006 https://doaj.org/article/5c93497cb47d4210909c68e0efa3a480 EN eng EDP Sciences https://doi.org/10.1051/epjconf/201714009006 https://doaj.org/toc/2100-014X 2100-014X doi:10.1051/epjconf/201714009006 https://doaj.org/article/5c93497cb47d4210909c68e0efa3a480 EPJ Web of Conferences, Vol 140, p 09006 (2017) Physics QC1-999 article 2017 ftdoajarticles https://doi.org/10.1051/epjconf/201714009006 2022-12-31T06:49:26Z This study aims at understanding the interplay between the interfacial properties of the powder grains and the characteristics of the liquid flow used to disperse them, in order to obtain an effective dispersion of a powder in a liquid, avoiding air entrainment. The dispersion of grain “rafts” and powder islands “stacks” was investigated both on a static and on a moving air-liquid interface. Powder wicking prevents the formation of a powder island when the grain contact angle is below a critical contact angle. Above the critical contact angle, a powder island forms and grows to a critical depth that depends on grain radius and contact angle. Imposing a flow on the air-liquid interface can either promote water impregnation, reducing the depth of the powder island or destabilise the whole island. In the latter case, the island sinks, forming a heterogeneous powder structure that is wet outside and dry inside. Article in Journal/Newspaper Powder Island Directory of Open Access Journals: DOAJ Articles Powder Island ENVELOPE(-68.759,-68.759,-69.525,-69.525) EPJ Web of Conferences 140 09006 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 |
spellingShingle |
Physics QC1-999 Ong Xin Yi Taylor Spencer E. Ramaioli Marco The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands |
topic_facet |
Physics QC1-999 |
description |
This study aims at understanding the interplay between the interfacial properties of the powder grains and the characteristics of the liquid flow used to disperse them, in order to obtain an effective dispersion of a powder in a liquid, avoiding air entrainment. The dispersion of grain “rafts” and powder islands “stacks” was investigated both on a static and on a moving air-liquid interface. Powder wicking prevents the formation of a powder island when the grain contact angle is below a critical contact angle. Above the critical contact angle, a powder island forms and grows to a critical depth that depends on grain radius and contact angle. Imposing a flow on the air-liquid interface can either promote water impregnation, reducing the depth of the powder island or destabilise the whole island. In the latter case, the island sinks, forming a heterogeneous powder structure that is wet outside and dry inside. |
format |
Article in Journal/Newspaper |
author |
Ong Xin Yi Taylor Spencer E. Ramaioli Marco |
author_facet |
Ong Xin Yi Taylor Spencer E. Ramaioli Marco |
author_sort |
Ong Xin Yi |
title |
The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands |
title_short |
The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands |
title_full |
The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands |
title_fullStr |
The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands |
title_full_unstemmed |
The Effect of Interfacial Properties and Liquid Flow on the Stability of Powder Islands |
title_sort |
effect of interfacial properties and liquid flow on the stability of powder islands |
publisher |
EDP Sciences |
publishDate |
2017 |
url |
https://doi.org/10.1051/epjconf/201714009006 https://doaj.org/article/5c93497cb47d4210909c68e0efa3a480 |
long_lat |
ENVELOPE(-68.759,-68.759,-69.525,-69.525) |
geographic |
Powder Island |
geographic_facet |
Powder Island |
genre |
Powder Island |
genre_facet |
Powder Island |
op_source |
EPJ Web of Conferences, Vol 140, p 09006 (2017) |
op_relation |
https://doi.org/10.1051/epjconf/201714009006 https://doaj.org/toc/2100-014X 2100-014X doi:10.1051/epjconf/201714009006 https://doaj.org/article/5c93497cb47d4210909c68e0efa3a480 |
op_doi |
https://doi.org/10.1051/epjconf/201714009006 |
container_title |
EPJ Web of Conferences |
container_volume |
140 |
container_start_page |
09006 |
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1766174096144465920 |