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reversed flow in 20 faces on pressure-inlet 7.
temperature limited to 1.000000e+000 in 42 cells on zone 2 in domain 1
  temperature limited to 5.000000e+003 in 46 cells on zone 2 in domain 1
absolute pressure limited to 1.000000e+000 in 4139 cells on zone 2
turbulent viscosity limited to viscosity ratio of 1.000000e+005 in 1 cells
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reversed flow in 23 faces on pressure-inlet 7.
temperature limited to 1.000000e+000 in 182 cells on zone 2 in domain 1
  temperature limited to 5.000000e+003 in 380 cells on zone 2 in domain 1
absolute pressure limited to 1.000000e+000 in 805 cells on zone 2
turbulent viscosity limited to viscosity ratio of 1.000000e+005 in 33000 cells
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many cases when working with turbulence models, the turbulent viscosity might get too large, then it might be possible that at some point the rate of dissipation is becoming zero and hence you will get the floating point error.
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