Detachment of droplets from surfaces due to turbulent flow

Wingtong Leung; Sauchung Fu; Christopher Y.H. Chao

Detachment of droplets from surfaces due to turbulent flow

Wingtong Leung, Sauchung Fu, Christopher Y.H. Chao

Department of Building Environment and Energy Engineering

Research output: Unpublished conference presentation (presented paper, abstract, poster) › Conference presentation (not published in journal/proceeding/book) › Academic research › peer-review

Abstract

Detachment of droplets from surfaces due to turbulent flow was studied experimentally. A wind tunnel generating a fully developed channel flow was constructed. Droplets on three different materials were tested in the wind tunnel. With plastic and glass substrates, the whole droplet moved when the velocity of the air current exceeded a critical value. For a stainless steel substrate, the droplet split into portions; one portion migrated and the other portion stayed at the initial position. When a droplet came to the end of the three tested substrates and reached the edge of a step, it moved along the step. Under the tested flow condition, all droplets either remained in the place or slid on the substrate, but no resuspension to the airborne state was observed.

Original language	English
Pages	453-459
Number of pages	7
Publication status	Published - 2014
Event	13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014 - Hong Kong, Hong Kong Duration: 7 Jul 2014 → 12 Jul 2014

Conference

Conference	13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
Country/Territory	Hong Kong
City	Hong Kong
Period	7/07/14 → 12/07/14

Keywords

Detachment
Droplet
Turbulent flow

ASJC Scopus subject areas

Pollution
Building and Construction
Health, Toxicology and Mutagenesis
Computer Science Applications

Cite this

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abstract = "Detachment of droplets from surfaces due to turbulent flow was studied experimentally. A wind tunnel generating a fully developed channel flow was constructed. Droplets on three different materials were tested in the wind tunnel. With plastic and glass substrates, the whole droplet moved when the velocity of the air current exceeded a critical value. For a stainless steel substrate, the droplet split into portions; one portion migrated and the other portion stayed at the initial position. When a droplet came to the end of the three tested substrates and reached the edge of a step, it moved along the step. Under the tested flow condition, all droplets either remained in the place or slid on the substrate, but no resuspension to the airborne state was observed.",

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Detachment of droplets from surfaces due to turbulent flow. / Leung, Wingtong; Fu, Sauchung; Chao, Christopher Y.H.
2014. 453-459 Paper presented at 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014, Hong Kong, Hong Kong.

Research output: Unpublished conference presentation (presented paper, abstract, poster) › Conference presentation (not published in journal/proceeding/book) › Academic research › peer-review

TY - CONF

T1 - Detachment of droplets from surfaces due to turbulent flow

AU - Leung, Wingtong

AU - Fu, Sauchung

AU - Chao, Christopher Y.H.

PY - 2014

Y1 - 2014

N2 - Detachment of droplets from surfaces due to turbulent flow was studied experimentally. A wind tunnel generating a fully developed channel flow was constructed. Droplets on three different materials were tested in the wind tunnel. With plastic and glass substrates, the whole droplet moved when the velocity of the air current exceeded a critical value. For a stainless steel substrate, the droplet split into portions; one portion migrated and the other portion stayed at the initial position. When a droplet came to the end of the three tested substrates and reached the edge of a step, it moved along the step. Under the tested flow condition, all droplets either remained in the place or slid on the substrate, but no resuspension to the airborne state was observed.

AB - Detachment of droplets from surfaces due to turbulent flow was studied experimentally. A wind tunnel generating a fully developed channel flow was constructed. Droplets on three different materials were tested in the wind tunnel. With plastic and glass substrates, the whole droplet moved when the velocity of the air current exceeded a critical value. For a stainless steel substrate, the droplet split into portions; one portion migrated and the other portion stayed at the initial position. When a droplet came to the end of the three tested substrates and reached the edge of a step, it moved along the step. Under the tested flow condition, all droplets either remained in the place or slid on the substrate, but no resuspension to the airborne state was observed.

KW - Detachment

KW - Droplet

KW - Turbulent flow

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M3 - Conference presentation (not published in journal/proceeding/book)

AN - SCOPUS:84924657153

SP - 453

EP - 459

T2 - 13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014

Y2 - 7 July 2014 through 12 July 2014

ER -

Detachment of droplets from surfaces due to turbulent flow

Abstract

Conference

Keywords

ASJC Scopus subject areas

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