Dear Araujo,

Do i need to input constraints for my body in dynamicMeshDict file?, because the same i had already inputed in pointDisplacement file.
Pls suggest.

Thanks and Regards,
Amit Dhage

Which openfoam version are you using? This varies from version to version.

I am using version 2.2.2

Check out the pointDisplacement file. I believe there is something wrong with your constraints.

Dear Araujo,

I have checked the constraints many a times and really not finding any clue,
can you pls check the same file i am attaching herewith and suggest something.

Regards,
Amit Dhage

Center of mass on (0,0,0)? Is that correct? It is important to notice that the center of mass of the cylinder is referred relative to the domain position (your mesh).

Dear Araujo,

The centre of mass is specified w.r.t global coordinate system, and the domain is also specified w.r.t global coordinate system. Is this correct?

regards,
Amit Dhage

Dear Amit,

my pointDisplacement file is attached. I hope that would be help.

All the best.

Sorry there is attached problem. Here it is

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.3.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class pointVectorField;
location "0.01";
object pointDisplacement;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 1 0 0 0 0 0];

internalField uniform (0 0 0);

boundaryField
{
cylinder
{
type calculated;
value uniform (0 0 0);
}

top
{
type empty; //symmetry;
}

bottom
{
type empty; //symmetry;
}

walls
{
type slip; //symmetry;
}


".*"
{
type fixedValue;
value uniform (0 0 0);
}
}


// ************************************************** *********************** //

Dear Maimouna,

Thanks for your reply!

Are you able to produce results with point displacement file you sent to me?, since you have not imposed any constraints on the body, if so then i will try with the same.

Thanks and regards,
Amit Dhage

Dear Amit,

constraints and resistance are imposed in dynamicMeshDict file. I'm still working on that to get the result.

Regards
Maimouna

Dear Maimouna,

I am not sure if that will work, because if you go through the tutorial of Wing motion...constraints and restraints are set in PointDisplacement file and not in dynamicMeshDict file.

Thanks and regards,

Amit Dhage

Dear Amit,

you are right if you are using OF-2.2.2, but I'm using OF-2.3.0. So you will find the difference.

All the best.
Maimouna

oh is it?, then its fine...let me know if it works successfully.

Thanks and regards,
Amit Dhage

Dear Leonardo,

what are your stiffness and damping values that you used in your case?

What about displacement? Where exactly did you set that?

Could you please provide us by that information to make more clarification.

Thanks and regards.

Maimouna

dear Amit
i have run with your pointDisplacement file and the result shown the cylinder is stationary in different Re number (Re=100,150,200)
did you have same problem? and what did you do?
Thanks & regards
Alireza Heidari

method
 

Sir how you are simulating this project, with fluent and transient structural. If so then what constraint are you using for transient structural?

Thanks, please help me