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Grids - Mach 1.63 Axisymmetric Jet

Note that these grids are identical for the 3 cases of Temperature-Matched Mach 1.63 Axisymmetric Jet, Heated Mach 1.63 Axisymmetric Jet, and Off-Design Mach 1.63 Axisymmetric Jet.

A series of 4 nested grids are provided. Each is made up of 3 zones. Each grid has been scaled relative to the jet exit radius (i.e., r_jet=1). All grid files have been gzipped. Each coarser grid is exactly every-other-point of the next finer grid, ranging from the finest 401x281; 201x161; 961x481 to the coarsest 51x36; 26x21; 121x61 grid. The following figure shows the finest grid. Note that the jet exit is at x=0, at the boundary of zones 1 and 3.

Note: be sure to use double precision when reading the grids!

STRUCTURED VERSIONS OF GRIDS

PLOT3D Files

The structured PLOT3D grids are given in two different ways, as 2-D grids (x-y plane) or as 3-D axisymmetric grids (two planes rotated through 1 deg from each other. You may use whichever is more convenient for your particular application. If you get the 2-D grid version, then you must create an axisymmetric grid from it on your own.

Format for the structured 2D grids is PLOT3D-type, formatted, MG, 2D (nbl=1) - note that you must use double precision when reading! :

      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

Download the 2-D version of the grids in PLOT3D format here:

• (2-D) 401x281; 201x161; 961x481 (gzipped) (7.9 MB)
• (2-D) 201x141; 101x81; 481x241 (gzipped) (2.0 MB)
• (2-D) 101x71; 51x41; 241x121 (gzipped) (0.5 MB)
• (2-D) 51x36; 26x21; 121x61 (gzipped) (0.1 MB)

Format for the 2-rotated-plane structured 3D grid is PLOT3D-type, formatted, MG, 3D (nbl=1, and idim in this case is 2) - note that you must use double precision when reading! :

      read(2,*) nbl
      read(2,*) (idim(n),jdim(n),kdim(n),n=1,nbl)
      do n=1,nbl
        read(2,*) (((x(i,j,k,n),i=1,idim(n)),j=1,jdim(n)),k=1,kdim(n)),
     +            (((y(i,j,k,n),i=1,idim(n)),j=1,jdim(n)),k=1,kdim(n)),
     +            (((z(i,j,k,n),i=1,idim(n)),j=1,jdim(n)),k=1,kdim(n))
      enddo

Download the 3-D version of the grids in PLOT3D format here:

• (3-D) 2x401x281; 2x201x161; 2x961x481 (gzipped) (19.4 MB)
• (3-D) 2x201x141; 2x101x81; 2x481x241 (gzipped) (4.7 MB)
• (3-D) 2x101x71; 2x51x41; 2x241x121 (gzipped) (1.2 MB)
• (3-D) 2x51x36; 2x26x21; 2x121x61 (gzipped) (0.3 MB)

If desired, example Neutral Map Files associated with 3-D version of the grids are given here (these files specify grid indices associated with each boundary condition - see The Neutral Map File):

• Neutral Map File for (3-D) 2x401x281; 2x201x161; 2x961x481
• Neutral Map File for (3-D) 2x201x141; 2x101x81; 2x481x241
• Neutral Map File for (3-D) 2x101x71; 2x51x41; 2x241x121
• Neutral Map File for (3-D) 2x51x36; 2x26x21; 2x121x61

UNSTRUCTURED VERSIONS OF GRIDS

AFLR3 Files

The unstructured versions of the same grids are all given as AFLR3 (UGRID) files. Download the unstructured AFLR3 grids (gzipped) as (mostly) 3-D hexahedra (quadrilaterals in x-z plane) here:

• (3-D) AFLR3 unstruct grid (1,212,321 nodes, 604,800 cells) (gzipped) (33.3 MB)
• (3-D) AFLR3 unstruct grid (304,664 nodes, 151,200 cells) (gzipped) (8.3 MB)
• (3-D) AFLR3 unstruct grid (76,734 nodes, 37,800 cells) (gzipped) (2.1 MB)
• (3-D) AFLR3 unstruct grid (19,469 nodes, 9450 cells) (gzipped) (0.5 MB)

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Last Updated: 04/24/2024