Hi all, Have anyone known ho
 

Hi all,
Have anyone known how to use engineSwirl. I try to use it with the solver "engineFoam", but the engineSwirl require quite differents engine geometry data file. I try to edit the file, but it fail because I don't know exactly definition.

Help me plese,
Torn

Hi, You need to add these
 

Hi,

You need to add these to 'engineGeometry'.


swirlAxis ( 0 0 1 );

swirlCenter ( 0 0 0 );

swirlRPMRatio swirlRPMRatio [0 0 0 0 0 0 0] 1.0;

swirlProfile swirlProfile [0 0 0 0 0 0 0] 3.11;

they should be pretty self-explanatory, except for swirlProfile, and if you have a look at the
kivaSwirl.ps file in the engineSwirl-dir you can read all about it.

Niklas

I am a beginner of OF ,and I e
 

I am a beginner of OF ,and I executed engineSwirl and run on FoamX.
But,the result had no difference between default and swirl.
I am not sure what to do.
Please help me...

Velocity field in the intial condition
 

Hi Everyone,

If i incorporate swirl in the engineGeometry file. What should i specify in the initial boundary condtion uniform (0,0,0)???

initial charge velocity field U using engineSwirl.
 

Hi everyone,

I have pretty much the same question as senthilmech08.
In the context of my master thesis, I am doing a 3D axisymmetric engine model using the solver EngineFoam (from lagrangian/SprayFoam) without the spray function.

The HCCI research engine I model has a late IVC at -127 CAD aTDC, I have to start my simulation at -152CAD aTDC (computed effective IVC).
I impose fixed temperature at the walls (380K for liner + cylinder head and 430K for piston). To accurately predict wall heat transfer, the mesh has been refined close to the walls and I have to implement swirl.

To do so, I try to use the engineSwirl pre-processing utility in FOAM_CASE/constant/engineGeometry. However, I don't know how to specify the flow velocity (Ux,Uy,Uz) initial conditions.
Initalising it to (0,0,0) seems to disable engineSwirl has my mean pressure trace do not change with or without the use of engineSwirl ...

Help me please,

François VdP

In your case, you need to: 1. Modify the engineGeometry file as described above. 2. Run the engineSwirl utility from the OpenFoam terminal window (at this step, the file with initial flow velocity will be rewritten). 3. Start the calculation.


BR
Andrei Zelentsov