Bulletin of the American Physical Society
74th Annual Meeting of the APS Division of Fluid Dynamics
Volume 66, Number 17
Sunday–Tuesday, November 21–23, 2021; Phoenix Convention Center, Phoenix, Arizona
Session T12: Drops: Heat Transfer, Evaporation and Buoyancy Effects II & Multiple Drop Interactions
12:40 PM–3:16 PM,
Tuesday, November 23, 2021
Room: North 126 ABC
Chair: Andrew Dickerson, University of Tennessee
Abstract: T12.00003 : Freezing splashes*
1:06 PM–1:19 PM
Presenter:
Christophe F Josserand
(CNRS)
Authors:
Christophe F Josserand
(CNRS)
Rodolphe Grivet
(LadHyX)
Thomas Seon
(IJLRA)
Axel Huerre
(MSC)
Usually, spreading of the drop is observed at low velocity, and splashing above a threshold velocity that depends on the drop geometry, fluids properties and substrate conditions.
In the present study, we investigate how this splashing velocity evolves for water drops impact on a solid substrate, when varying the substrate temperature. While a small variations are
observed for subtrate temperature above the freezing one of water (0° C), a rapid decrease of the threshold is noticed for sub-freezing substrate temperature. Freezing thus promote splashing!
We will characterize this variation and discuss the new physical mechanisms at play in this splashing regime.
*Grant DGA "Interface and solidification" is acknowledged.
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