KNOWN ISSUE: Incorrect solutions for inhomogeneous multiphase flow with GGI interfaces and coupled volume fractions (Class 3 Error)
If an inhomogenous multiphase flow which has some GGI interfaces is calculated using the coupled volume fractions algorithm, then incorrect variable fields are generated at the interfaces, and these will be propagated into the surrounding domains.
This is due to incorrect assembly of the volume fraction equations at the GGI interfaces.
Use the default segregated volume fractions algorithm.
ANSYS CFX Release 14.5. A custom executable for ANSYS Release 14.0 is available on request.