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Old   November 17, 2013, 10:30
Default error epsilon too small
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I simulated a cyclone in I'm tracking particle in unsteady method.
when fluent go to dpm tracing, print "epsilon too small epsilon too small..."
can any body help me???
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Old   March 6, 2014, 07:09
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I just had the same problem.
For me it is in steady-state, laminar flow (so no k-epsilon model used).
I have tried changing the tolerance in the accuracy control of the dpm model, but the same error message keeps coming up.

The solution in my case: I looked at the injection file that I used, and I found out that I made a mistake before, and had given the particles an initial velocity of 1e22 m/s. After fixing that mistake, the particles started with a more realistic velocity, and the "epsilon too small" error disappeared.
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