-------- adding-pGrad-to-simpleFoam Method --------------
* wmake simpleFullyDevelopFoam
* casefile: channel_pGrad_1cells_H_simple, run ./Allrun

-------- simpleFoam + fvOptions Method --------------
* casefile: channel_pGrad_fvOptions, run ./Allrun

-------- post-processing --------------
* paraFoam, glyph
