These are the basic exercises. Modify them to make simple cases. They have 0 for perturbations so they should return A=0. 
This is not the case for the energy_space discretization that returns sligthly higher so keep attenction. After a fast control
of the author the error was not found (if there are).

Name of folder refer to the fatorization case: energy_space means use one amplitude but two reference flux and space is the mono-
energetic case.

First of all you should change the mesh (N.B. the actual one is able to work with the make_mesh.H file so do not change
the name of patches. If you want to do an analysis that implies a different mesh from the basic one that is in blockMesh 
it is recommended to select the option 2 so make on your own the mesh. Morover remember that the mesh should be very simple, 
constructed with blockMeshDict). 

Then change the properties as you want in setFieldsDict (both two are in system). Properties must be given in cm. 

If you want to study different time range you have to modify parameters inside controlDict.  

blockMesh

setFields 

EQS_... 

Finally use paraView to see the results



