Previous Up Next

6.4  PASS: Momentum conservation for large density ratios

Author
Stéphane Popinet
Command
gerris2D kinetic.gfs
Version
1.1.0
Required files
kinetic.gfs (view) (download)
kinetic.gfs
Running time
8 seconds

A dense droplet moves through a lighter background fluid. The kinetic energy decreases due to viscous dissipation (Figure 68). For these density and viscosity ratios of 1000, the calculation is stable only if a "mollified" volume fraction is used to compute the average density and viscosity.


Figure 68: Evolution of the kinetic energy.


Previous Up Next