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GDI Combustion modeling using ECFM-3Z

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Old   August 26, 2015, 11:34
Unhappy GDI Combustion modeling using ECFM-3Z
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Venkatesh V
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I need some clarification on using StarCD ECFM-3Z combustion model for simulating GDI engines.

1. How good are results from ECFM-3Z model available in StarCD compared to experiments with default parameters?

2. What are all combustion model parameters tuned to match test data?

3. What is valid range for these parameters? Are these tuned parameters work well for all other similar engines or they need to be adjusted for each engine and each operating point?

4. How good are default fuel available in StarCD compared to fuel used in Dyno?

Thanks in advance ...
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Old   January 7, 2016, 05:40
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srivatsan
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1. As far I know, we need not tune the parameters ! But be careful with the octane/cetane no ..
2.Check your initial conditions which is the prime most parameter
3. They don't need to be tuned for each operating point .. when you can initially validate with the experimental data .. u can leave the parameter as it is !
4.The given fuel libraries are reliable .. sorry ! I dint know abt Dyno..

Thanks
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