Three dimensional compressible simulations of the Rossby Wave Instability are presented in a non-homentropic model of protoplanetary disk.The instability develops like in the two dimensional case, gradually coming sten jacket m to the formation of a single big vortex.This 3D vortex has a quasi-2D structure which looks like a vorticity column with only tiny vertical motions.
The vortex survives hundred of rotations in a quasi-steady evolution and slowly migrates inward teal horse blanket toward the star.