root = c25d-flo-visc-mixed-[100*spacing]:

These mixed-element (tetrahedral and prismatic elements) grids are in
full scale meters and are intended for 0 deg angle of attack, Mach
1.60, and have a uniformly refined spacing in three dimensions of
0.64, 0.80, 1.00, 1.25, 1.56, and 2.0. See the README two levels up
for details. They were created by Mike.Park@NASA.gov

The grid files contain 83 boundary patches:
- patch 2 is inflow
- patch 4 is outflow
- patches 1,3,5-21 are the outer boundaries of the N-gon
- patch 22 is y-symmetry
- patches 23-83 are the aircraft outer mold line

scale     nodes tetrahedra  pyramids    prisms
2.00    4789378    5150691     45214   7616515
1.60    8927997    9967336     64398  14153295
1.28   17887604   19393340     77668  28720379
1.00   36531052   40355827    124456  58625592
0.80   69833869   79008828    213368 111723909
0.64  138478889  153886434    322866 223048965

[root].b8.ugrid
[root].mapbc

real*8 data big endian C binary (FORTRAN stream) form of AFLR3 ugrid

[root].cgns

http://cgns.sourceforge.net/ format