CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CD-adapco (http://www.cfd-online.com/Forums/cd-adapco/)
-   -   how does the ignition model initiate main combustion (http://www.cfd-online.com/Forums/cd-adapco/103692-how-does-ignition-model-initiate-main-combustion.html)

mepgzzi June 23, 2012 14:32

how does the ignition model initiate main combustion
 
Dear all,

Im using StarCD for GDI engine combustion simulation. I use EBU model for main combustion and select the numerical ignition as a spark.
My question it, how does the ignition model trigger the main combustion. As is stated in methodology, ignition is accomplished when a portion of the fuel at the spark is consumed. Apart from this, does the ignition has anything to do with the local air-fuel ratio? Are mass,momentum,energy equivalence considered between the spark cells and the chamber cells that enough energy should be created at the spark to trigger main combustion, or is the ignition determined only numerically from the mass of fuel burnt at the spark?

Thanks


All times are GMT -4. The time now is 18:33.