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Eulerian dense phase and report flux problem

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Old   September 5, 2012, 22:57
Default Eulerian dense phase and report flux problem
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Hi , I have a few questions regarding multiphase eulerian with dpm simulation using transient.
1) is it normal to for simulation to take 12hours for simulation of60 seconds? I find that if increase time step size, there will be spikes in residual. So I had to keep it at a low value of 0.01. How else can I reduce the simulation time?
2) I am trying to figure out why my flux report for mass flowratr of phase2(discretephase) is showing 0 for inlet, however the monitor shows particle are being injected. Please I hope to get some hints, if not I will have to carry out this simulation again.thanks
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