Class 3 Error
SYMPTOM:
When using the Small Droplet Temperature model, the interphase heat transfer is not correctly predicted wherever the liquid droplets have not reached equilibrium.
PROBLEM:
For multiphase flow calculations with dispersed phases using the small droplet temperature model, the interphase heat transfer incorrectly uses the local saturation temperature for the droplet/vapor interface condition. This means that the gas phase total enthalpies are not quite right because the heat transfer rate is not correctly predicted in parts of the flow where the liquid droplets have not reached equilibrium. The correct approach is to use the droplet internal temperature to set the interface condition, which is specified algebraically under small droplet
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WORKAROUND: No workaround is current available. FIXED IN: ANSYS CFX Release 11.0 Service Pack 1. |
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