problem in the ECFM combustion model
 

Hello forever

trying to simulate the combustion (fuel=hydrogen) in an ICE using cfd converge 2.3 using the ECFM combustion model

[IMG]https://img15.hostingpics.net/thumbs...apositive1.jpg[/IMG]

for the emmission of NOx, i select the extended zeldovitch nox model

[IMG]https://img15.hostingpics.net/thumbs...apositive2.jpg[/IMG]

selecting ECFM combustion model, i see that the reaction mechanism is disappear

[IMG]https://img15.hostingpics.net/thumbs...apositive3.jpg[/IMG]

but in laminar flamme setup and for all model (metghalchi, gulder and IFPEN metghalchi) i don't find the hydrogen H2 as fuel

[IMG]https://img15.hostingpics.net/thumbs...apositive4.jpg[/IMG]

[IMG]https://img15.hostingpics.net/thumbs...apositive5.jpg[/IMG]

[IMG]https://img15.hostingpics.net/thumbs...apositive6.jpg[/IMG]

i try to choose the metghalchi model and a "user defined" as fuel , i find a several problems when i validate the case

[IMG]https://img15.hostingpics.net/thumbs...apositive7.jpg[/IMG]

[IMG]https://img15.hostingpics.net/thumbs...apositive8.jpg[/IMG]

i don't understand whey converge ask about "CO2" and "CO" ?? because i don't need to add them in the species because i use hydrogen H2 as fuel?

the same question about the other species "bfuel" "unmixfuel" that converge write "required for ECFM3Z model"

??????????????

You cannot use ECFM with H2 as only HC fuels are supported currently with ECFM combustion model.

You can use SAGE detailed chemistry for H2 combustion.

Thanks,