Simulations with outflow object - Marvin

To investigate why the inner rim of the CND is unstable when adding an outflow object I did two simulations: One with outflow object but a outflow velocity of zero, and one with an increased ram pressure. The inner black circle in my animations marks the outflow object, the outer black circle marks the initial inner rim of the accretion disk.

Animation of the Surface Density, inner 4 pc of the disk, outflow velocity = zero​

Animation of the Surface Density, inner 4 pc of the disk, ram pressure increaed by factor 8​

The first Animation shows the surface density of the disk in a simulation with a zero velocity outflow object. The inner rim of the disk is stable, as we have seen in the simulations without outflow object.

The second animation shows the surface density of the disk when the outflow object has an increased ram pressure. I increased the density and the velocity of the outflow by a factor of 2, respectively, so the mass flow is increaed by a factor of 4 and the ram pressure by a factor of 8. We see that with these parameters the outflow is strong enough to prevent the inner rim from collapsing, but not strong enough to push the material outwards.

Surface Density, inner 4 pc of the disk, outflow velocity = zero:

Surface Density, inner 4 pc of the disk, ram pressure increaed by factor 8:

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