Droplet Impact on dry solid surfaces: Traditional vs Bio-mimetic

Saptarshi  Basu; Durbar  Roy; Khushboo Pandey; Rabibrata Mukherjee

Droplet Impact on dry solid surfaces: Traditional vs Bio-mimetic

Saptarshi Basu, Durbar Roy, Khushboo Pandey, Rabibrata Mukherjee

School of Engineering

Research output: Contribution to conference › Abstract › peer-review

Abstract

An experimental study of droplet impact has been conducted on four different substrates (2 traditional and 2 bio-mimetic) in the impact Weber number range of 6 to 130. The droplet shape dynamics have been visualized using high speed shadowgraphy (at 10 kHz). Glass and PDMS are the traditional substrates, whereas the other two surfaces are inspired by rose-petal and lotus-leave micro-structures. Various regimes are demarcated for all the substrates depending on the impact Weber number. The receding rebound, and breakup mechanisms of bio-mimetic surfaces are found to be strikingly different from that of the traditional substrates. Dimensional analysis, scaling arguments and energetics have been utilized to unearth the underlying dynamics of the impact.

Original language	Undefined/Unknown
Publication status	Published - Nov 2019
Event	70th Annual Meeting of the APS Division of Fluid Dynamics - Colorado, Denver, United States Duration: 19 Nov 2017 → 21 Nov 2017 http://meetings.aps.org/Meeting/DFD17/Content/3384

Conference

Conference	70th Annual Meeting of the APS Division of Fluid Dynamics
Abbreviated title	APS-DFD
Country/Territory	United States
City	Denver
Period	19/11/17 → 21/11/17
Internet address	http://meetings.aps.org/Meeting/DFD17/Content/3384

Cite this

@conference{b40fdfa2d55549b59372d32beb89d2a7,

title = "Droplet Impact on dry solid surfaces: Traditional vs Bio-mimetic",

abstract = "An experimental study of droplet impact has been conducted on four different substrates (2 traditional and 2 bio-mimetic) in the impact Weber number range of 6 to 130. The droplet shape dynamics have been visualized using high speed shadowgraphy (at 10 kHz). Glass and PDMS are the traditional substrates, whereas the other two surfaces are inspired by rose-petal and lotus-leave micro-structures. Various regimes are demarcated for all the substrates depending on the impact Weber number. The receding rebound, and breakup mechanisms of bio-mimetic surfaces are found to be strikingly different from that of the traditional substrates. Dimensional analysis, scaling arguments and energetics have been utilized to unearth the underlying dynamics of the impact.",

author = "Saptarshi Basu and Durbar Roy and Khushboo Pandey and Rabibrata Mukherjee",

year = "2019",

month = nov,

language = "Undefined/Unknown",

note = "70th Annual Meeting of the APS Division of Fluid Dynamics ; Conference date: 19-11-2017 Through 21-11-2017",

url = "http://meetings.aps.org/Meeting/DFD17/Content/3384",

}

TY - CONF

T1 - Droplet Impact on dry solid surfaces: Traditional vs Bio-mimetic

AU - Basu, Saptarshi

AU - Roy, Durbar

AU - Pandey, Khushboo

AU - Mukherjee, Rabibrata

PY - 2019/11

Y1 - 2019/11

N2 - An experimental study of droplet impact has been conducted on four different substrates (2 traditional and 2 bio-mimetic) in the impact Weber number range of 6 to 130. The droplet shape dynamics have been visualized using high speed shadowgraphy (at 10 kHz). Glass and PDMS are the traditional substrates, whereas the other two surfaces are inspired by rose-petal and lotus-leave micro-structures. Various regimes are demarcated for all the substrates depending on the impact Weber number. The receding rebound, and breakup mechanisms of bio-mimetic surfaces are found to be strikingly different from that of the traditional substrates. Dimensional analysis, scaling arguments and energetics have been utilized to unearth the underlying dynamics of the impact.

AB - An experimental study of droplet impact has been conducted on four different substrates (2 traditional and 2 bio-mimetic) in the impact Weber number range of 6 to 130. The droplet shape dynamics have been visualized using high speed shadowgraphy (at 10 kHz). Glass and PDMS are the traditional substrates, whereas the other two surfaces are inspired by rose-petal and lotus-leave micro-structures. Various regimes are demarcated for all the substrates depending on the impact Weber number. The receding rebound, and breakup mechanisms of bio-mimetic surfaces are found to be strikingly different from that of the traditional substrates. Dimensional analysis, scaling arguments and energetics have been utilized to unearth the underlying dynamics of the impact.

UR - https://ui.adsabs.harvard.edu/#abs/2019APS..DFDP21006B/abstract

M3 - Abstract

T2 - 70th Annual Meeting of the APS Division of Fluid Dynamics

Y2 - 19 November 2017 through 21 November 2017

ER -

Droplet Impact on dry solid surfaces: Traditional vs Bio-mimetic

Abstract

Conference

Other files and links

Cite this