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Why my solution diverge when I change mean and max diameter of injection ?

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Old   July 30, 2020, 10:38
Default Why my solution diverge when I change mean and max diameter of injection ?
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Taha
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I am simulating a spray with hollow-cone nozzle through multi phase (air-liquid water) model (DPM, K-W) in Ansys Fluent 19 and I already reach convergence with my solution. However, I need to change the mean and max diameter of water droplet in injection properties and by doing this, the solution diverge especially in K-W phase.

I got convergence when :
Min diameter : 0.0001 mm
Max diameter : 0.06 mm
Mean diameter : 0.05 mm
I got divergence when :
Min diameter 0.0001 mm
Max diameter : 0.04 mm
Mean diameter : 0.005 mm

What is your suggestion?
Thanks,
Taha
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cfd, divergence, dpm convergence, fluent 19, multi phase flow

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