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March 6, 2013, 20:20 |
LES problems
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#1 |
New Member
Roy
Join Date: Mar 2013
Posts: 3
Rep Power: 13 |
Hi all,
Currently, i using ECFM with LES simulate the combustion in spark ignition gasoline reciprocating engine. However, there are no combustion occurs when i look at the flame surface density result. I also tired to input knocking effect during the combustion, but the propagation of flame is weird. With the same configuration but different equation like K-Epsilon, K-Zeta-F and Pans, the results were just okay. I also noticed that when i used LES to run the simulation, the simulation completed far more quicker than K-Epsilon, K-Zeta-F or Pans. Supposingly, LES should take a longer period to run right? I am confused. I was wondering anyone also encounter this kind of problem. I am so new with AVL, so please kindly guide me. Regards, Roy |
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