A spin on cavity formation during water entry of hydrophobic and hydrophilic spheres
Name
Techet-2009-A spin on cavity.pdf
Size
858.44 KB
Format
Adobe PDF
Checksum (MD5)
29a7bbac786d702d7f7f713873eb5147
Author(s)
Truscott, Tadd T.
Techet, Alexandra H.
Date Issued
December 2009
Journal
Physics of Fluids
Publisher
American Institute of Physics
Citation
Truscott, Tadd T., and Alexandra H. Techet. “A spin on cavity formation during water entry of hydrophobic and hydrophilic spheres.” Physics of Fluids 21 (2009): 121703.© 2009 American Institute of Physics.
Version
Final published version
Abstract
Surface coating and impact velocity can dramatically affect cavity formation during water entry of spheres. Duez et al. [Nat. Phys. 3, 180 (2007) ] present a theoretical limit, dependent on impact velocity and surface static wetting angle, below which air cavities no longer form. We show that transverse spin alters the spheres surface velocity distribution to straddle this theoretical limit, resulting in cavity formation over half of the sphere and none on the other half, and yields similar results to the case of a sphere dropped without spin, at the same impact speed, when its surface is half hydrophilic and half hydrophobic.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1.3272264
