coding to add DES option for S-A turbulence model (also corrected a few format statements and added a warning about running idim=2 with i2d=0)
coding to add DES option for S-A turbulence model
(also corrected a few format statements and added a
warning about running idim=2 with i2d=0)

chengdi123000/CFL3D,chengdi123000/CFL3D