Objectives:
Mass transfers are of great importance in technological
processes but the theoretical models used generally assume
linear variations of the mass transfer coefficients. In fact,
surface tension and density ....
(full text)
Reference
ESA SP-1132 pg 74 - 75
Experiment procedure
Experiment procedure and results:
1mn 23s after launch, in microgravity, air was blown between
two small pipes in a container (4 cm inner diameter, 4 cm deep)
filled with a 3 vol % acetone-water solution in order to create
a bubble
.
The pipes were 4 mm in diameter, coated with
teflon and the ....
(full text)
Results
Inhomogeneous mass transfer generated surface tension gradients
at the gas/liquid interface, which in turn generated convection
flows in the liquid bulk. These flows were observed by means of
tracer particles and recorded with a TV camera linked to the
ground. A ....
(full text)
.
Four cells Marangoniflow
Flow pattern around a stable bubble