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Convergence criteria for DPM and Non Premixed combustion

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Old   April 13, 2016, 17:47
Question Convergence criteria for DPM and Non Premixed combustion
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pkp
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Presteina
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I am working on a Non Premixed combustion module with DPM for spray modelling. For first few time steps I can reach to the convergence easily, but once fuel starts injecting, the convergence is really a big problem. The problem is fully unsteady and it has more complexities like evaporation of spray, breakup of particles and wall film. Generally I face problems with the continuity residual, which goes up to max 2e-2.
Is this value acceptable for the nearby answers ? Can anybody tell me the solution for this convergence ?

Thanks !! :B
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Old   April 16, 2016, 17:03
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yun
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hi pkp,
my study field is far more different than yours (contaminant transport in rooms).
i can simulate continuous phase as you said easily with 10e-06. but when i interact it with DPM especially continuity does not converge. it stucked nearly at 10e-2.
many researchers from different areas have also the same problem which i read in this forum.

i could not solve it yet. please let me know if you reach any proper solution for that.
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