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Forum: OpenFOAM Pre-Processing

January 13, 2006, 09:38

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Niklas, yes chemistry is on

Niklas,

yes chemistry is on!

combustionProperties:
---------------------
chemistry on;

chemistrySolver ODE;
//chemistrySolver EulerImplicit;

Forum: OpenFOAM Pre-Processing

January 13, 2006, 08:56

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

with the wedge geometry I run

with the wedge geometry I run my simulation from -180 to 180 CA. Fuel is also injected and the temperatures are high enough so combustion process should take place!?!

Forum: OpenFOAM Pre-Processing

January 13, 2006, 08:40

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

thanks I will try your PISO se

thanks I will try your PISO setup.

another problem is that there is no combustion (signifiant pressure or temperature gain) altough I enabled the chemistry (15species, 39reations).

Forum: OpenFOAM Pre-Processing

January 12, 2006, 14:52

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

the same problem occurs when I

the same problem occurs when I restart my calc from -180 CA http://www.cfd-online.com/OpenFOAM_Discus/clipart/sad.gif

I have changed my mesh to a simple wedge geomerty and now the calc proceed...

Forum: OpenFOAM Pre-Processing

January 12, 2006, 10:37

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Niklas, thanks for you supp

Niklas,

thanks for you support so far!

Sorry for my ignorance but what do you mean with "... and upwind for all variables"

set upwind for all convection terms set all interpolation...

Forum: OpenFOAM Pre-Processing

January 12, 2006, 10:37

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Forum: OpenFOAM Pre-Processing

January 12, 2006, 10:12

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Niklas, as recommended I ch

Niklas,

as recommended I changed the follwing parameters:

Yi BICCG 1e-07 0;
nNonOrthogonalCorrectors 1;
momentumPredictor off;

div(phi,rho) Gauss upwind; ...

Forum: OpenFOAM Pre-Processing

January 12, 2006, 08:31

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Hi Niklas, I have already t

Hi Niklas,

I have already tried to set momentumPredicator off but the problem still exists. As I already mentioned above the calculation aborts after -66,5 CA reproducible.

Here are the...

Forum: OpenFOAM Pre-Processing

January 12, 2006, 05:43

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Can anyone help me with this e

Can anyone help me with this error.

from CA -180 to -66 all is ok but then the following error occurs:

--> FOAM FATAL ERROR : attempt to use janafThermo<equationofstate> out of temperature...

Forum: OpenFOAM Pre-Processing

January 12, 2006, 05:39

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

Hi, as you can see from the

Hi,

as you can see from the dieselEngine (logSummary.H) code

mean p: spacial mean value of the pressure of the computational domain.

mean u': mean (time+space) turbulent velocity...

Forum: OpenFOAM Pre-Processing

January 6, 2006, 07:33

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

is there anybody who can help

is there anybody who can help ?

Forum: OpenFOAM Pre-Processing

December 30, 2005, 15:02

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

control dict: -------------

control dict:
-------------
adjustTimeStep yes;
maxCo 0.1;
maxDeltaT 1.0;

boundary conditions:
--------------------
T,p,k,epsilon - engineFoam default
O2,N2,Ydefault-...

Forum: OpenFOAM Pre-Processing

December 30, 2005, 09:34

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

I try to "merge" the two cases

I try to "merge" the two cases to get a setup for the dieselEngine solver. I use the same mesh as the engineFoam case to get rid of mesh problems.

Nevertheless the calculation fails:
...

Forum: OpenFOAM Pre-Processing

December 30, 2005, 07:02

Replies: 42

DieselEngineFoam

Views: 9,394

Posted By stefanke

As far as I known the dieselEn

As far as I known the dieselEngineFoam is the only solver that does not currently have a tutorial case or FoamX configuration!

Has anybody out there an existing FoamX config or at least a...

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