Large-amplitude nonlinear oscillations of an axially symmetric
water drop of volume
7.33 cm3, initial aspect ratio 3.4, with surfactant Triton X-100
of
1.4×10−4 g ml−1 (1 CMC), in microgravity
are compared
with predictions of the boundary-integral
method. The small shear viscosity of the bulk phase, as well as the surface
dilatational
viscosity and surface shear viscosity are considered. When a very specific
set of
material properties is assumed, numerical simulations of the drop oscillations
are in
good agreement with the experimental results of drop oscillations measured
in space
during the second United States Microgravity Laboratory, USML-2. The obtained
surface viscosities are in rough agreement with literature values.