[soheil nazmdeh]

hi guys
we are working on Fsi project, and we used icofsifoam for solve, and we encountered with this error after mesh & boundary generation, so can anyone help us to what we should do about this error

error:
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM Extend Project: Open source CFD |
| \\ / O peration | Version: 1.6-ext |
| \\ / A nd | Web: www.extend-project.de |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 1.6-ext-a0e4ecb4d630
Exec : icoFsiFoam
Date : Jul 28 2013
Time : 13:34:36
Host : soheil-Aspire-5755G
PID : 6213
Case : /home/soheil/Desktop/myCase/fluid
nProcs : 1
SigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create dynamic mesh for time = 0

Selecting dynamicFvMesh dynamicMotionSolverFvMesh
--> FOAM Serious Error :
From function IOobject::readHeader(Istream&)
in file db/IOobject/IOobjectReadHeader.C at line 90
Reading "/home/soheil/Desktop/myCase/fluid/constant/polyMesh/boundary" at line 1
First token could not be read or is not the keyword 'FoamFile'

Check header is of the form:

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM Extend Project: Open source CFD |
| \\ / O peration | Version: 1.6-ext |
| \\ / A nd | Web: www.extend-project.de |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class IOobject;
location "constant/polyMesh";
object boundary;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

--> FOAM Serious Error :
From function IOobject::readHeader(Istream&)
in file db/IOobject/IOobjectReadHeader.C at line 90
Reading "/home/soheil/Desktop/myCase/fluid/constant/polyMesh/boundary" at line 1
First token could not be read or is not the keyword 'FoamFile'

Check header is of the form:

/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM Extend Project: Open source CFD |
| \\ / O peration | Version: 1.6-ext |
| \\ / A nd | Web: www.extend-project.de |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class IOobject;
location "constant/polyMesh";
object boundary;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //



--> FOAM FATAL ERROR:
Cannot find file "boundary" in directory "constant/polyMesh"

From function Time::findInstance(const fileName&, const word&, const IOobject::readOption)
in file db/Time/findInstance.C at line 148.

FOAM exiting



Thank you so much

[nimasam]

read the error to solve the problem, solver is looking for the file name "boundary", but it can not find it in directory "constant/polyMesh", so you need to add this file to your constant/polyMesh

--> FOAM FATAL ERROR:
Cannot find file "boundary" in directory "constant/polyMesh"

[soheil nazmdeh]

Hi ,
I try to solve my case with icoFsiFOAM solver , but in my geometry this eroor accur when try to solve it :

.....
Moving mesh time step continuity errors : sum local = -92209, global = 1.98903, cumulative = 2.86326
CG: Solving for p, Initial residual = 0.999957, Final residual = 7.0708e-07, No Iterations 526
CG: Solving for p, Initial residual = 0.999109, Final residual = 0.000723223, No Iterations 1000
Moving mesh time step continuity errors : sum local = 2.07627e+14, global = 2.26112e+10, cumulative = 2.26112e+10
Floating point exception (core dumped)

please help me to solve it...!

[nimasam]

it diverges you may want to try smaller timeStep or reduce your residual at fvSolution or increase your correctors in PISO

[soheil nazmdeh]

Thax for your answer...!