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

Saptarshi Basu, Durbar Roy, Khushboo Pandey, Rabibrata Mukherjee

Research output: Contribution to conferenceAbstractpeer-review

Abstract / Description of output

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 languageUndefined/Unknown
Publication statusPublished - Nov 2019
Event70th Annual Meeting of the APS Division of Fluid Dynamics - Colorado, Denver, United States
Duration: 19 Nov 201721 Nov 2017
http://meetings.aps.org/Meeting/DFD17/Content/3384

Conference

Conference70th Annual Meeting of the APS Division of Fluid Dynamics
Abbreviated titleAPS-DFD
Country/TerritoryUnited States
CityDenver
Period19/11/1721/11/17
Internet address

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