|February 11, 2014, 12:47||
Multi-phase Lagrangian not working/converging
hasan hasan hasan
Join Date: Apr 2013
Posts: 3Rep Power: 5
Hallo every one,
i am really hoping and looking forward for some help!
basically i am having a hard time making my simulation of a multi-phase with a porous medium converge or even work.
so far this is what i have tried:
the simplified model is basic a mix between angledDuctExplicit (geometry/porous medium) and vertical (Lagrangian/model and solver/ sizeDistribution: RosinRammler - no chemistry) channel tutorial. three dummy points were picked to be used a injectors (coneInjection).
using the LTSreactingParcelFoam on a simplified model:
1. the simulation converges on a rough mesh but when using a finer mesh no converges!
2. on the finer mesh the simulation does not converge even after changed or switching on/off all of the fallowing:
4. using a different thermo or transport model didnt help!
using the reactingParcelFoam on a simplified model:
1. the simulation crashes as soon as one parcel injected.
2. initialization of the simulation using a mapfield + another solver didn't help!
3. using a very small/smaller time step didn't help!
using either LTSreactingParcelFoam/reactingParcelFoam on the real model:
using all of the the variations:
the model either cashes or when i am really really really really really really lucky: the simulations stops and gets stuck after adding new parcels.
given the bad documentation of the reactingCloud1properties file i think it would be helpful if any one can explain a way to understand how many parcels are introduced and how to calculate that number form the input parameters(massFlowRate/massTotal/duration/parcelsPerInjector/Umag/parcelsPerSecond).
does any one have any ideas?
|convergence, lagrangian, ltsreactingparcelfoam, reactingparcelfoam|
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