backwardstep examples

[jobinhio]

• backwardstep.cfg symbolic link to backwardstep3d.cfg
• backwardstep2d.jon update
• backwardstep3d.jon update
• file pages/backwardstep/Readme.adoc doesn't contain results and conclusions

[jobinhio]

here are the results for backwardstep2d exemples velocity.

here are the results for backwardstep2d exemples pressure.

[jobinhio]

here are the results for backwardstep3d exemples pressure.

here are the results for backwardstep3d exemples velocity.

[prudhomm]

@lberti @VLCeline could you show @jobinhio how to make nice graphics/images with paraview ?
you could actually save the paraview pipeline to reuse it for each case.

[prudhomm]

@jobinhio @lberti did you manage to verify the results quantitatively or also qualitatively ?

[lberti]

@prudhomm ok concerning the graphics.
The results of these cases have been verified only qualitatively, I believe.

[prudhomm]

Whenever quantitative data are available, please add the check section