If you start with RH 100% at a certain condition with a compressible gas mixture as you alter the temperature you'll see condensation. However, balancing the conditions along with evaporation/condensation rates may be numerically stiff and/or require very small timesteps to maintain solver accuracy.Â
The issue may be as much that setting RH 100% will cause condensation as the temperature falls slightly, so I'm not sure whether that proves your theory, or simply that condensation occurs when a saturated mixture cools.Â
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