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Combustion Modeling in internal combustion engine |
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July 26, 2012, 15:36 |
Combustion Modeling in internal combustion engine
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#1 |
New Member
CO
Join Date: Jul 2012
Posts: 1
Rep Power: 0 |
Hello!
I am trying to run a 3D in-cylinder spark ignited combustion model of of an engine. I can run the model perfectly through a cycle with cold air, but when I introduce combustion with a premixed fuel model the solution diverges just a few time steps after spark ignition. I tried playing around with the underrelaxation factors, but it is still diverging at the same point. are there any tricks to addressing this type of situation that someone has dealt with before? Thanks! |
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May 25, 2013, 14:20 |
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#3 |
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Zacarias Carral
Join Date: Sep 2012
Posts: 35
Rep Power: 14 |
Try to refine the mesh, reduce the time step and incement the relaxation factors.
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May 26, 2013, 05:30 |
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#4 |
New Member
Amit
Join Date: Nov 2012
Posts: 9
Rep Power: 13 |
Thanks for your suggestion. I'll try it out.
Regards Amit Kumar |
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Tags |
combustion engine, combustion instability, diverging solution, in-cylinder, spark model |
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