Currently, the following tools are available along with CFL3D. These files are all compiled using the make cfl3d_tools command (see "Building Executables" on the index bar at the left of the CFL3D webpage).

• Tools:

Get_FD.F

This program reads two CFL3D restart files and calculate finite differences of force and moment coefficients; it is used to validate complex-variable approach for determining solution derivatives.

INGRID_to_p3d.F

This program converts PEGSUS 4.x INGRID file to a PLOT3D file that can be used in CFL3D. Note that the INGRID file must correspond to grid points rather than "augmented" cell centers.

XINTOUT_to_ovrlp.F

This program converts the XINTOUT overset grid interpolation file from PEGSUS to the ovrlp.bin file used by CFL3D.

cfl3d_to_pegbc.F

This program creates a peg.bc.raw file for use with PEGSUS 5.x.

cgns_to_cfl3dinput.F

This program reads a CGNS file and creates a PLOT3D-type grid as well as a best-guess for a CFL3D input file.

everyother_xyz.F

This program reads a grid and creates an every-other-point grid. This can be useful in combination with the program v6inpdoubhalf.F, in order to reduce the required CFL3D run-time memory when you are only running on a coarser-level grid (and not taking it up to the finer level(s).

grid_perturb.F

This program generates a real-valued grid (PLOT3D multiblock form) by reading in a real-valued grid (PLOT3D multiblock form) and a corresponding real-valued matrix of grid-sensitivity derivatives (PLOT3D multiblock function file form, with 3*ndv variables for the x,y,z components of the ndv design variables). The code Get_FD.F may be used with the two restart files to determine d(Cl)/d(DV), d(Cd)/d(DV), etc.

grid_perturb_cmplx.F

This program generates a complex-valued grid (PLOT3D multiblock form) by reading in a real-valued grid (PLOT3D multiblock form) and a corresponding real-valued matrix of grid-sensitivity derivatives (PLOT3D multiblock function file form, with 3*ndv variables for the x,y,z components of the ndv design variables). The output grid may be read into the complex version of CFL3D (cfl3dcmplx_mpi or cfl3dcmplx_seq) to determine the solution derivatives with respect to the chosen design variable.

initialize_field.F

This program creates a restart.bin restart file in which you can specify specific initial conditions, region by region. This can be useful when "freestream everywhere" is not a desirable initial condition.

moovmaker.F

This program reads the PLOT3D files output by CFL3D when the MOVIE parameter is used for 2-D datasets (or 3-D datasets surface-only), and creates new PLOT3D files with time as the third (k) direction.

p3d_to_INGRID.F

This program converts either PLOT3D or CFL3D type grids into either INGRID type grids that can be used with PEGSUS 4.x, or PLOT3D type grids that can be used with PEGSUS 5.x. The converted grids can contain either the grid points as given in the input grids, or "augmented" cell centers of the input grids.

p3d_to_cfl3drst.F

This program reads PLOT3D files and creates an approximate restart.bin restart file. This can be useful if: (1) you are given a PLOT3D Q-file from another code, and you wish to use it as a basis for starting CFL3D, or (2) you have lost the CFL3D restart file, but you still have the PLOT3D Q-file.

plot3dg_to_cgns.F

This program reads a PLOT3D grid file and a CFL3D input file and creates a CGNS file (with grid, BC, and 1-to-1 connectivity information in it).

v6_restart_mod.F

This program reads a restart.bin restart file and manipulates it. It can switch between unformatted and formatted (which is useful if you need to transfer the restart file to a machine of different architecture). It can also write out the restart file either the same size, half the size, or double the size. Going to half size is useful if one wishes to restart from a fine grid solution and run on a coarser level. User can choose to coarsen/refine only particular index directions, if desired. The program cannot both coarsen and refine different directions simultaneously.

v6inpdoubhalf.F

This program reads a CFL3D input file and creates a new input file appropriate for a grid of either half or double the size. This can be useful in combination with the program everyother_xyz.F when running on coarser grid levels, and you wish to reduce the run-time memory required.

cgns_readhist.F

This program reads the convergence history information (residual, CL, CD, etc.) from a CGNS file and writes it to a formatted file.

Page Curator and NASA Responsible Official: Christopher L. Rumsey

Last Updated: January 16, 2007

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