This grid is in nondimensional units (nondimensionalized by hump chord of 16.536 inches). This is a 4-zone grid, with 1-to-1 interface connectivity, created using Gridgen V14. The zone sizes are as follows: 793x217 161x121 65x121 49x217 The 1-to-1 blocking data is as follows: 1-1 BLOCKING DATA: NBLI 3 NUMBER GRID : ISTA JSTA KSTA IEND JEND KEND ISVA1 ISVA2 1 1 1 233 1 2 353 1 1 2 2 3 1 1 1 2 1 121 1 3 3 1 1 1 1 2 1 217 1 3 NUMBER GRID : ISTA JSTA KSTA IEND JEND KEND ISVA1 ISVA2 1 3 1 65 121 2 65 1 1 3 2 2 1 161 1 2 161 121 1 3 3 4 1 49 1 2 49 217 1 3 The way to read the above table is to match the number from the 1st set with the number from the 2nd set. For example, for interface number 1, grid 1 connects with grid 3. Because this is a 2-D grid, the i-indices ISTA and IEND are irrelevant. The j-index from zone 1 from 233-353 (at k=1) matches up with the k-index from zone 3 from 121-65 (reverse ordering) (at j=65). The parameters isva1 and iva2 indicate which index is varying (but because this is a 2-D grid, the fact that the i-index is varying (ISVA1=1) is irrelevant)... for interface number 1 the j-index (ISVA2=2) is varying in grid 1, and the k-index (ISVA=3) is varying in grid 3. The B.C.s are as follows: Zone 1 J0 : 1-to-1 interface with zone 4 JDIM: downstream tunnel outflow (set back pressure) K0 : wall from 1-233 and 353-793; 1-to-1 interface with zone 3 from 233-353 KDIM: inviscid wall Zone 2 J0 : bottom of bell-shaped chamber this BC may be inviscid wall when there is no flow control or else it may be the BC that defines suction/blowing JDIM: 1-to-1 interface with zone 3 K0 : wall KDIM: wall Zone 3 J0 : 1-to-1 interface with zone 2 JDIM: 1-to-1 interface with part of zone 1 K0 : wall KDIM: wall Zone 4 J0 : upstream tunnel inflow JDIM: 1-to-1 interface with zone 1 K0 : wall KDIM: inviscid wall ---------- This grid system extends to x/c=-6.39 upstream of the bump's leading edge, and to x/c=4.0 downstream. The grid height is y/c=0.90905, which corresponds with the actual tunnel height of 15.032 inches from the splitter plate to the top tunnel wall. Also, note that if you desire to input boundary conditions directly at the "inflow" location of x/c=-2.14 (the location where upstream data was taken in the experiment), then zone 4 can be omitted (i.e., zone 1 has a forward extent to exactly x/c=-2.14). The min spacing at viscous walls was set to be approximately 8.e-6. This minimum spacing yields a y+ value less than 1, even for the grid when every other point is removed in each coordinate direction. The top tunnel wall has inviscid-type wall grid spacing. Format for the structured grid is PLOT3D-type, formatted, MG, 2D: read(2,*) nbl read(2,*) (idim(n),jdim(n),n=1,nbl) do n=1,nbl read(2,*) ((x(i,j,n),i=1,idim(n)),j=1,jdim(n)), + ((y(i,j,n),i=1,idim(n)),j=1,jdim(n)) enddo