"Full" buoyancy model in CFX
ANSYS CFX distinguishes between a "full" buoyancy model as opposed to a Boussinesq buoyancy model for turbulence. What is meant by a "full" buoyancy model?
Is this something intrinsic to CFX or is this a fundamental question related to turbulence modelling? Thanks so much for any information! 
Full buoyancy uses the density variations in the fluid to calculate buoyancy force. Boussinesq is for incompressible fluids  "pseudo" buoyancy. It approximates the density variations with a correlation to the temperature variation.

"Full" Buoyancy
Thanks! I see. So then is "full" buoyancy equivalant to a compressible flow model? It seems that there are some differences between the two?
Thank you very much for any further information! 
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