Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2011-02-10
Physics
Condensed Matter
Soft Condensed Matter
Scientific paper
The steady state motion of cylindrical droplets under the action of external body force is investigated both theoretically and via lattice Boltzmann simulation. As long as the shape-invariance of droplet is maintained, the droplet's center-of-mass velocity linearly scales with both the force density and the square of droplet radius. However, a non-linear behavior appears as the droplet deformation becomes significant. This deformation is associated with the drop elongation occurring at sufficiently high external forcing. Yet, independent of either the force density or the droplet size, the center-of-mass velocity is found to be linear in terms of the inverse of dynamic viscosity. In addition, it is shown that the energy is mainly dissipated in a region near the substrate particularly close to the three phase contact line. The total viscous dissipation is found to be proportional to both the square of force density and the inverse of dynamic viscosity. Moreover, the dependence of the center-of-mass velocity on the equilibrium contact angle is investigated. A simple analytic model is provided reproducing the observed behavior.
Moradi Nasrollah
Steinbach Ingo
Varnik Fathollah
No associations
LandOfFree
Dynamics of cylindrical droplets on flat substrate: Lattice Boltzmann modeling versus simple analytic models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamics of cylindrical droplets on flat substrate: Lattice Boltzmann modeling versus simple analytic models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of cylindrical droplets on flat substrate: Lattice Boltzmann modeling versus simple analytic models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-694595