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Search: Posts Made By: antoniofct
Forum: OpenFOAM April 20, 2013, 11:52
Replies: 50
Views: 12,768
Posted By antoniofct
you have to create an object in createFields and...

you have to create an object in createFields and then specify the solver to calculate it.

something like:

in createFields:

volScalarField ptotal
(
IOobject
(
Forum: OpenFOAM April 19, 2013, 14:18
Replies: 50
Views: 12,768
Posted By antoniofct
Not sure If I understood what you meant. It...

Not sure If I understood what you meant.

It writes the area-based average mass flow everytime the console outputs new values.

It can also output average pressure with the following:

...
Forum: OpenFOAM April 19, 2013, 13:54
Replies: 50
Views: 12,768
Posted By antoniofct
functions ( MassFlow { type...

functions
(
MassFlow
{
type patchMassFlow;
functionObjectLibs
(
"libsimpleFunctionObjects.so"
);
verbose true;
Forum: OpenFOAM July 24, 2012, 12:39
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, I have already told you this before but...

Hi,

I have already told you this before but maybe you missed that point: when defining totalpressure or isentropicTotalTemperature you are giving the p0 and T0 correctly but the "value" entry is...
Forum: OpenFOAM July 23, 2012, 11:38
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, So you have succeed in converging in...

Hi,

So you have succeed in converging in Starccm+.

You can take the values of total pressure and total temperature from your converged solution and put it in the respective files in the 0...
Forum: OpenFOAM July 20, 2012, 15:03
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, TemperatureDirectedInletVelocity allows...

Hi,

TemperatureDirectedInletVelocity allows you to specify a fixed Vteta (the omega entry), for me it is the great thing about this boundary.That and the ability to change between coordinates...
Forum: OpenFOAM July 18, 2012, 10:51
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, If you are really going to...

Hi,



If you are really going to simulate with the volute you will need a mixing plane in that interface. Both patches of the mixing plane will be non-rotating. In fact it is irrelevant if it is...
Forum: OpenFOAM July 17, 2012, 14:46
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, I am sorry, I explained wrong. ...

Hi,

I am sorry, I explained wrong.

Concerning the connection between volute and wheel you will have two boundary conditions, they will be of type ggi or mixing plane ( whatever it suits you...
Forum: OpenFOAM July 16, 2012, 14:47
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, I am not sure if I understood your...

Hi,

I am not sure if I understood your question.

About your pdf, regarding the CFD of the problem you have one inlet ( entering the rotor ), two outlets ( one exiting the shroud at the middle...
Forum: OpenFOAM July 12, 2012, 04:47
Replies: 50
Views: 12,768
Posted By antoniofct
Hi, I can't give you my meshes as they...

Hi,

I can't give you my meshes as they belong to a company.

I just notice you have some errors. your velocity file is wrong. The omega there is zero ( 0 0 0 ) ( look at the test case) you are...
Forum: OpenFOAM July 6, 2012, 11:04
Replies: 50
Views: 12,768
Posted By antoniofct
You seem to have everything fine. As you have set...

You seem to have everything fine. As you have set bigger RPM, you could just put zero gradient in pressure at outlet and define a total pressure at inlet. The energy you are providing with the blade...
Forum: OpenFOAM July 4, 2012, 14:26
Replies: 50
Views: 12,768
Posted By antoniofct
Hi jyothishkumar, I have runned with RPM up...

Hi jyothishkumar,

I have runned with RPM up to 100000 and it has no problem. About that error you are getting, it is a problem regarding thermodynamic settings, namely your temperatures are...
Forum: OpenFOAM June 27, 2012, 14:40
Replies: 50
Views: 12,768
Posted By antoniofct
Helo, If you are interested in compressible...

Helo,

If you are interested in compressible turbomachinery you probably want to take a look into the DensityBasedTurbo solvers. They are not that fast, but you can get very nice results. Search in...
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