Class 3 Error
SYMPTOM:
A multiphase case (with at least two Eulerian phases) which has a Lagrangian particle phase which transfers mass to an Eulerian phase and uses the coupled volume fraction method for its solution gives incorrect results. The results are correct if the Eulerian fluid involved in mass transfer from the Lagrangian particles has a density of exactly 1 in solver units, but incorrect otherwise. In a well-converged case, it may be noticed that the imbalances of some equations (those which have a contribution from the Particle Source) are significantly larger than for the other equations, but for a less well-converged case this will not be noticeable.
PROBLEM:
The fluid density normalisation was incorrectly coded in th
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WORKAROUND: No workaround is currently available. FIXED IN: ANSYS CFX Release 12.0. A custom executable for ANSYS CFX 11.0 SP1 is available on request. |
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