TY - JOUR
T1 - Drag Moderation by the Melting of an Ice Surface in Contact with Water
AU - Vakarelski, Ivan Uriev
AU - Chan, Derek Y. C.
AU - Thoroddsen, Sigurdur T
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2015/7/24
Y1 - 2015/7/24
N2 - We report measurements of the effects of a melting ice surface on the hydrodynamic drag of ice-shell-metal-core spheres free falling in water at a Reynolds of number Re∼2×104–3×105 and demonstrate that the melting surface induces the early onset of the drag crisis, thus reducing the hydrodynamic drag by more than 50%. Direct visualization of the flow pattern demonstrates the key role of surface melting. Our observations support the hypothesis that the drag reduction is due to the disturbance of the viscous boundary layer by the mass transfer from the melting ice surface.
AB - We report measurements of the effects of a melting ice surface on the hydrodynamic drag of ice-shell-metal-core spheres free falling in water at a Reynolds of number Re∼2×104–3×105 and demonstrate that the melting surface induces the early onset of the drag crisis, thus reducing the hydrodynamic drag by more than 50%. Direct visualization of the flow pattern demonstrates the key role of surface melting. Our observations support the hypothesis that the drag reduction is due to the disturbance of the viscous boundary layer by the mass transfer from the melting ice surface.
UR - http://hdl.handle.net/10754/561139
UR - http://link.aps.org/doi/10.1103/PhysRevLett.115.044501
UR - http://www.scopus.com/inward/record.url?scp=84938831513&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.115.044501
DO - 10.1103/PhysRevLett.115.044501
M3 - Article
C2 - 26252689
SN - 0031-9007
VL - 115
JO - Physical Review Letters
JF - Physical Review Letters
IS - 4
ER -