Partial coalescence of soap bubbles
Author(s)Harris, D. M.; Harris, Daniel Martin; Bush, John W. M.
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We present the results of an experimental investigation of the merger of a soap bubble with a planar soap film. When gently deposited onto a horizontal film, a bubble may interact with the underlying film in such a way as to decrease in size, leaving behind a smaller daughter bubble with approximately half the radius of its progenitor. The process repeats up to three times, with each partial coalescence event occurring over a time scale comparable to the inertial-capillary time. Our results are compared to the recent numerical simulations of Martin and Blanchette [“Simulations of surfactant effects on the dynamics of coalescing drops and bubbles,” Phys. Fluids 27, 012103 (2015)] and to the coalescence cascade of droplets on a fluid bath.
DepartmentMassachusetts Institute of Technology. Department of Mathematics
Physics of Fluids
American Institute of Physics (AIP)
Pucci, G.; Harris, D. M. and Bush, J. W. M. “Partial Coalescence of Soap Bubbles.” Phys. Fluids 27, no. 6 (June 2015): 061704. © American Institute of Physics (AIP)
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