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volume fraction bound exceeded?

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Old   April 19, 2016, 15:45
Default volume fraction bound exceeded?
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Hi All,

I am running particle laden non-reacting flows with twoPhaseEulerFoam from OF3.0.1. The maximum volume fraction is located at the particle injector, which is about 0.00011. I think for the whole domain, the volume fraction at each point cannot be larger this value. However, from the output. I think the maximum volume fraction is greater than 0.00013. Please see as below:

=============
MULES: Solving for alpha.particles
MULES: Solving for alpha.particles
smoothSolver: Solving for alpha.particles, Initial residual = 8.54808217e-19, Final residual = 4.77975917e-20, No Iterations 1
alpha.particles volume fraction = 1.66126095e-08 Min(alpha.particles) = -2.86705823e-209 Max(alpha.particles) = 0.000130570829
Constructing momentum equations
min T.particles 299.999896
min T.air 300
GAMG: Solving for p_rgh, Initial residual = 0.00929055683, Final residual = 5.91928124e-07, No Iterations 2
GAMG: Solving for p_rgh, Initial residual = 0.000105164517, Final residual = 1.30719335e-06, No Iterations 1

=============

Is there any problem for this maximum volume fraction (0.000130570829), when at the particle inlet alpha = 0.00011 ?
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