From OpenFOAMWiki

1 Copy Some Source Code

if you do not yet have a solver directory in $WM_PROJECT_USER_DIR , create it:

mkdir $WM_PROJECT_USER_DIR/applications/solvers

Copy the original tutorial code for buoyantBoussinesqPimpleFoam into your solver directory, renaming it to my_tornado:

cd heatTransfer
cp -r buoyantBoussinesqPimpleFoam  $WM_PROJECT_USER_DIR/applications/solvers/my_tornado

With this code in its new location, we need to copy a file that was shared in the the previous location:

cp buoyantBoussinesqSimpleFoam/readTransportProperties.H  $WM_PROJECT_USER_DIR/applications/solvers/my_tornado/.

Check that the code compiles in its new location:

cd $WM_PROJECT_USER_DIR/applications/solvers
ls -l
cd my_tornado

if you have this file, delete it:

rm buoyantBoussinesqPimpleFoam.dep
cd Make

If you have this directory, then delete it:

rm -rf linux64GccDPOpt

and edit the file named "files" to this:

EXE = $(FOAM_APPBIN)/my_tornado
cd ..

You may get a few warnings. But hopefully you will see a new app my_tornado (though without any ability yet to make a tornado) :


Next we add the capabiltiy to make the tornado.

2 Add the Coriolis Force

Add a single line UEqn.H, so that the top of the file is:

    // Solve the momentum equation

    fvVectorMatrix UEqn
      + fvm::div(phi, U)
      + turbulence->divDevReff(U)
      + (2*myVector ^ U) // Coriolis force

Add one line to the end of readTransportProperties.H

dimensionedVector myVector(laminarTransport.lookup("myVector"));

Then recompile


3 Prepare the Run Directory

cd $FOAM_RUN/tutorials/heatTransfer
cp -r buoyantBoussinesqPimpleFoam/hotRoom $FOAM_RUN/my_tornado

We consolidate some code that were separate in the original tutorial structure:

cp -r buoyantPimpleFoam/hotRoom/setHotRoom $FOAM_RUN/my_tornado/.
cd $FOAM_RUN/my_tornado

You should see something like this:

0/  Allclean*  Allrun*  constant/  setHotRoom/  system/

Edit Allrun so that the compileApplication line is simply:

compileApplication setHotRoom

Now we need to specify myVector, which we will use as the rotation vector in the calculation of the Coriolis force:

cd constant

Edit transportProperties near the end to include this line:

myVector myVector [0 0 -1 0 0 0 0] (0 0.001 0);


cd ..

A quick way to proceed is to do:


After about 20 seconds of CPU time, the run should finish. Now you should be apple to view the results with paraFoam. Note the log files.

If you want to experience the details that were scripted by Allrun, do this instead:

cd setHotRoom

This should reveal a new app setHotRoom:

cd ..