Learning Forum

[Eason_23]

I'm trying to import a CHEMKIN reaction mechanism into FLUENT, but there are always some problems, sometimes the FLUENT turns itself off, sometimes it's the same as in the image below.

[RK]

Hello, nYou will have to load the species into Fluent, that is what the error is indicating. You can add the missing species from the Fluent database from the Create / Edit Materials. n

[Eason_23]

Hello RK,nThank you for your apply. But every time this happened, Fluent turned itself off within seconds, and I didn't have a chance to add material.n

[Eason_23]

Hello RK,nThank you for your reply. But every time this happened, Fluent turned itself off within seconds, and I didn't have a chance to add material.n

[DrAmine]

1/Which mechanism files are you reading?n2/In Which Version?n

[Eason_23]

Hello Amine，nThis is the mechanism file.nnThe version I'm using is Ansys2020R2.nMany thanks.n

[DrAmine]

Is Fluent writing any out files in the directory you are trying to read the mechanism? Can you check them (asc.out, Kineticxxx) n

[DrAmine]

Mechanism looks weird or simple. only one reaction? n

[Eason_23]

Yes, because the exact mechanism of the reaction is not clear, it's just a simple mechanism.n

[Eason_23]

This is the chem.out file.nn

[DrAmine]

It is stating: Mechanism Input Error.n

[Eason_23]

How can I solve this problem? Because it shuts down automatically every time Fluent is imported.n

[Eason_23]

I have tried Ansys18.2 and 19.2, but the same problems still occur.n

[DrAmine]

Can you try reading another mechanism? There are some which are provided in the installation directory of fluent (fluentxx\Kinetics\data)n

[Eason_23]

I have tried, this is the chem.out file. The reaction mechanism is correct, but Fluent still shuts down automatically after import.nn

[DrAmine]

I am reading one standard mechanism in Fluent Standalone on pipe mesh (generic) everything in butter. So I cannot reproduce the crash on your side (I am using 21R1).n

[Eason_23]

Hello Amine,nThank you for your reply! But I don't have Ansysr21, can you share your standard mechanism with me? I'd like to try it on ANSYS2020R2.nMany thanks.nnn

[Eason_23]

Hello Amine,nThank you for your reply! But I don't have Ansysr21, can you share your standard mechanism with me? I'd like to try it on ANSYS2020R2.nMany thanks.nn