RT Journal Article
T1 Stabilization of periodically forced Hele-Shaw flows by means of a nonmonotonic viscosity profile
A1 Pérez Muñuzuri, Vicente
K1 Displacement of immiscible fluids
K1 Saffman-Taylor instability
AB The onset of viscous fingering in the presence of a viscosity profile is investigated theoretically for two immiscible fluids undergoing a time-dependent injection. Here, we show that the presence of a positive viscosity gradient at the interface between both fluids stabilizes the interface facilitating the spread of the perturbation. This effect is much more pronounced in the case of sinusoidal injection flows. The influence of the viscosity gradient on the dispersion relation is analyzed. Numerical simulations of the Navier-Stokes equation confirm the linear stability analysis.
PB American Physical Society
SN 2470-0045
YR 2022
FD 2022-07-14
LK https://hdl.handle.net/10347/37597
UL https://hdl.handle.net/10347/37597
LA eng
DS Minerva
RD 27 abr 2026