Update 10/19/2015 - Eddie

Below is image/movie showing the hydro 3-D pulsed jet: slice of x-z plane, slice of y-z plane, and column density.

movie​

It might be helpful to review how the outflow object is set up: OutflowObjects

My jet uses a radius = Rjet/2, thickness = Rjet/4, base = Rjet, and open_angle = 0. The outflow object steps on some cells, but the rest of the lower boundary is extrapolated; should probably change this to reflecting.


Things To Try

  • use different Riemann solver
  • adjust CFL
  • adjust boundary conditions of outflow object (radius, thickness, fade, etc.)
  • turn off pulsations
  • have precession fade from 0 to Rjet


UPDATE

Things i have tried thus far:

  • For some reason, the exact Riemann solver does not work well. Code stops early due to nan in flux.
  • Added velocity fade from 0 to Rjet. This is not a precession fade, just a velocity magnitude fade. Still see waves.
  • Turned off characteristic limiters, use primitive limiters instead. Still see waves.
  • Turned on ApplyDiffusion.
  • Lowered target CFL from 0.3 to 0.1.
  • Turned off pulsations.

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