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Old   March 14, 2013, 02:16
Unhappy Problem with LES
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Roy
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The attachment above shows the flame surface density obtained from the combustion of gasoline in SI engine.


Both simulation is using the same parameter, the only difference is the turbulance equation used:
  1. K-EPSILON
  2. LES
As shown in the attachment, for K-EPSILON, the gasoline will be combusted into flames and propagates throughout the cylinder after the spark is being ignited.
However, for LES, the flame did not propagate after the spark being ignited. I was expecting that i should have gotten the same result as K-EPSILON for LES.

i was wondering if anyone can tell me what went wrong with my LES simulation.
By the way, i am using AVL Fire v2011.1
Attached Images
File Type: bmp LES K-EPISOLON...bmp (88.0 KB, 6 views)

Last edited by Roy; March 14, 2013 at 02:34.
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Old   March 28, 2013, 09:51
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I can help you . But not on line. message me ur mobile no. or e mail id. we wil be in touch with that. where are you from. 9912194512
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