Damping with evolving tau

• Damping prescription as in Ohlmann+17, using t_{dyn}=3\times10^5s (about equal to the freefall time, while the sound-crossing time is about 7.5\times10^5s).

Reflecting hydro BCs, Multipole expansion Poisson BCs (Damp051)
​2d density ​2d density and velocity

Extrapolating hydro BCs, Multipole expansion Poisson BCs (Damp052)
​2d density ​2d density and velocity

Extrapolating hydro BCs, Periodic Poisson BCs (Damp053)
​2d density ​2d density and velocity

Periodic hydro BCs, Periodic Poisson BCs (Damp054 running on bluehive)
​2d density ​2d density and velocity

Damping with AMR
a) Reflecting hydro BCs, Multipole expansion Poisson BCs, \tau=10^5 s (Damp044)
​2d density ​2d density and velocity

b) Extrapolating hydro BCs, Multipole expansion Poisson BCs, \tau=10^5 s (Damp047)
​2d density ​2d density and velocity

c) Extrapolating hydro BCs, Multipole expansion Poisson BCs, \tau=10^4 s (Damp049)
​2d density ​2d density and velocity

d) Extrapolating hydro BCs, Multipole expansion Poisson BCs, \tau=3\times10^4 s (Damp050 running on comet)
​2d density ​2d density and velocity

Comparison with (a) on left and (b) on right
​2d density ​2d density and velocity

Comparison with (b) on left and © on right
​2d density ​2d density and velocity