[kelvinaaa]

Hello

I am new to use openfoam and I have the following problem would like to consult all.

I would like to calculate and obtain forces acting on walls. I have added libforces.so in controlDict file.

Here is the code of controlDict

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 7
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application interFoam;

startFrom startTime;

startTime 0;

stopAt endTime;

endTime 2;

deltaT 0.05;

writeControl adjustableRunTime;

writeInterval 0.05;

purgeWrite 0;

writeFormat binary;

writePrecision 6;

writeCompression off;

timeFormat general;

timePrecision 6;

runTimeModifiable yes;

adjustTimeStep yes;

maxCo 1;
maxAlphaCo 1;

maxDeltaT 1;

//For basic operation
functions
{
force_lowerwall
{
// Mandatory entries
type forces;
libs ("libforces.so");
patches (lowerWall);
}
}
// ************************************************** *********************** //

And I have encountered the following problem:

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 7
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
Build : 7-ca808c8420bf
Exec : interFoam
Date : Dec 02 2019
Time : 10:26:11
Host : "kelvin-VirtualBox"
PID : 10643
I/O : uncollated
Case : /home/kelvin/OpenFOAM/kelvin-7/run/damBreak4
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

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

Create mesh for time = 0


PIMPLE: No convergence criteria found


PIMPLE: Operating solver in transient mode with 1 outer corrector
PIMPLE: Operating solver in PISO mode


Reading field p_rgh

Reading field U

Reading/calculating face flux field phi

Reading transportProperties

Selecting incompressible transport model Newtonian
Selecting incompressible transport model Newtonian
Selecting turbulence model type laminar
Selecting laminar stress model Stokes

Reading g

Reading hRef
Calculating field g.h

No MRF models present

No finite volume options present
DICPCG: Solving for pcorr, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 0, global = 0, cumulative = 0
Courant Number mean: 0 max: 0

Starting time loop

forces force_lowerwall:

--> FOAM FATAL IO ERROR:
keyword coordinateRotation is undefined in dictionary "/home/kelvin/OpenFOAM/kelvin-7/run/damBreak4/system/controlDict.functions.force_lowerwall"

file: /home/kelvin/OpenFOAM/kelvin-7/run/damBreak4/system/controlDict.functions.force_lowerwall from line 61 to line 64.

From function const Foam::dictionary& Foam::dictionary::subDict(const Foam::word&) const
in file db/dictionary/dictionary.C at line 708.

Before this problem, I have encountered the same problem of keyword origin is undefined in dictionary. However, after I added origin (0 0 0), the problem remains.

Can anyone help me to figure out the problem?

Many Thanks
Kelvin