RT Journal Article
T1 Ultrasound-enhanced mass transfer during single-bubble diffusive growth
A1 Moreno Soto, Álvaro
A1 Peñas López, Pablo
A1 Lajoinie, Guillaume
A1 Lohse, Detlef
A1 Van Der Meer, Devaraj
AB Ultrasound is known to enhance surface bubble growth and removal in catalytic and microfluidic applications, yet the contributions of rectified diffusion and microstreaming phenomena toward mass transfer remain unclear. We quantify the effect of ultrasound on the diffusive growth of a single spherical CO2 bubble growing on a substrate in supersaturated water. The time-dependent bubble size, shape, oscillation amplitude, and microstreaming flow field are resolved. We show and explain how ultrasound can enhance the diffusive growth of surface bubbles by up to two orders of magnitude during volumetric resonance. The proximity of the wall forces the bubble to oscillate nonspherically, thereby generating vigorous streaming during resonance that results in convection-dominated growth.
PB American Physical Society
SN 2469-990X
YR 2020
FD 2020-06-11
LK https://hdl.handle.net/10016/34576
UL https://hdl.handle.net/10016/34576
LA eng
NO This work was supported by the Netherlands Center for Multiscale Catalytic EnergyConversion (MCEC), an NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of the Netherlands.
DS e-Archivo
RD 12 sept. 2024