HowTo Add a Coriolis Force And Make a Tornado
1 Copy Some Source Code
if you do not yet have a solver directory in $WM_PROJECT_USER_DIR , create it:
Copy the original tutorial code for buoyantBoussinesqPimpleFoam into your solver directory, renaming it to myTornado:
cd $FOAM_SOLVERS cd heatTransfer cp -r buoyantBoussinesqPimpleFoam $WM_PROJECT_USER_DIR/applications/solvers/myTornado
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/myTornado/.
Now let's move on to check that this copied code will compile in its new location, with its new name:
cd $WM_PROJECT_USER_DIR/applications/solvers ls -l cd myTornado
if you have this file, delete it:
If you have this directory, then delete it:
rm -rf linux64GccDPOpt
and edit the file named "files" to this:
myTornado.C EXE = $(FOAM_APPBIN)/myTornado
Though not required, you may want to delete this line in the file named "options":
cd .. wmake
You may get a few warnings. But hopefully you will see a new app myTornado (though without any ability yet to make a tornado) :
At this point, the app myTornado will be identical to buoyantBoussinesqPimpleFoam. Next we add the capability 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::ddt(U) + fvm::div(phi, U) + turbulence->divDevReff(U) + (2*myVector ^ U) // Coriolis force );
Add one line to the end of readTransportProperties.H
3 Prepare the Run Directory
cp -r buoyantBoussinesqPimpleFoam/hotRoom $FOAM_RUN/myTornado
We consolidate some code that were separate in the original tutorial structure:
cp -r buoyantPimpleFoam/hotRoom/setHotRoom $FOAM_RUN/myTornado/.
cd $FOAM_RUN/myTornado ./Allclean ls
You should see something like this:
0/ Allclean* Allrun* constant/ setHotRoom/ system/
edit system/controlDict so that the application line reads (remove the original line rather than attempting to comment it out) :
Edit Allrun so that the compileApplication line is simply:
Now we need to specify myVector, which we will use as the rotation vector in the calculation of the Coriolis force:
Edit transportProperties near the end to include this line:
myVector myVector [0 0 -1 0 0 0 0] (0 0.001 0);
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 wmake
This should reveal a new app setHotRoom:
cd .. setHotRoom blockMesh myTornado