TY - JOUR
T1 - Rebounds of deformed cavitation bubbles
AU - Supponen, Outi
AU - Obreschkow, Danail
AU - Farhat, Mohamed
PY - 2018/10/16
Y1 - 2018/10/16
N2 - Presented here are experiments clarifying how the deformation of cavitation bubbles affects their rebound. Rebound bubbles carry the remaining energy of a bubble following its initial collapse, which dissipates energy mainly through shock waves, jets, and heat. The rebound bubble undergoes its own collapse, generating such violent events anew, which can be even more damaging or effective than at first bubble collapse. However, modeling rebound bubbles is an ongoing challenge because of the lack of knowledge on the exact factors affecting their formation. Here we use single-laser-induced cavitation bubbles and deform them by variable gravity or by a neighboring free surface to quantify the effect of bubble deformation on the rebound bubbles. Within a wide range of deformations, the energy of the rebound bubble follows a logarithmic increase with the bubble's initial dipole deformation, regardless of the origin of this deformation.
AB - Presented here are experiments clarifying how the deformation of cavitation bubbles affects their rebound. Rebound bubbles carry the remaining energy of a bubble following its initial collapse, which dissipates energy mainly through shock waves, jets, and heat. The rebound bubble undergoes its own collapse, generating such violent events anew, which can be even more damaging or effective than at first bubble collapse. However, modeling rebound bubbles is an ongoing challenge because of the lack of knowledge on the exact factors affecting their formation. Here we use single-laser-induced cavitation bubbles and deform them by variable gravity or by a neighboring free surface to quantify the effect of bubble deformation on the rebound bubbles. Within a wide range of deformations, the energy of the rebound bubble follows a logarithmic increase with the bubble's initial dipole deformation, regardless of the origin of this deformation.
UR - http://www.scopus.com/inward/record.url?scp=85056080432&partnerID=8YFLogxK
U2 - 10.1103/PhysRevFluids.3.103604
DO - 10.1103/PhysRevFluids.3.103604
M3 - Article
AN - SCOPUS:85056080432
VL - 3
JO - Physical Review Fluids
JF - Physical Review Fluids
SN - 2469-990X
IS - 10
M1 - 103604
ER -