Luminosity driven shell convection in an AGB star
(33 Mm x 11 Mm, 1200x400 points, 3480 sec)

Entropy fluctuations and bubbles als flow tracers.
Overturning flows in the convection zone. Waves in the stable layers.
Pressure fluctuations and isotherms.
The plumes "push" the material and cause a pressure excess. At the upper boundary the flow is bent sidewise and extends slightly into the stable layers. Here, gravity waves are excited.