Use These Utilities to get more from the Wind-US CFD Analysis Software

The Wind-US CFD analysis software comes with a variety of useful little utilities besides the “big three” (pre-processors GMAN and MADCAP and post-processor CFPOST ). Here is a very brief overview of some of the more commonly used ones.

The “Other Utilities”

There are numerous other “minor” utilities available which perform a variety of tasks on the files used or created by the Wind-US solver. Among these are the following:

  • cfappend—Append one common file to another.
  • cfcnvt—Convert between common files and various other file types.
  • cfreorder—Re-order and/or delete zones in a grid or flow file.
  • cfreset_iter—Reset the iteration count in a solution file to zero (useful when using a previous solution as initial conditions for a new case).
  • cfsplit and cfcombine—Split a specified structured grid zone (or zones) in a grid or flow file into multiple zones or reverse the process.
  • decompose and recombine—Automatically split a Wind-US structured grid system and, optionally, the corresponding flow file, into smaller grid zones to improve the parallel processing efficiency. Then, when the solution is run, recombine the split system back to its original form.
  • fpro—Perform various useful operations on Wind-US solution files (e.g. reinitialize and/or smooth sections of the domain, copy or interpolate solutions from another file, etc.).
  • gpro—Operate on common grid (.cgd) files in various ways (e.g. exchange coordinate directions, rotate and/or translate blocks, etc.).
  • resplt.pl—Extract various convergence data from the “list output file” of a simulation and create plot files from it (plotted with CFPOST).
  • thplt—Extract various saved data from a time history file (which is used to store user-specified variables at specific locations at each time step in a solution) and create plot files from it (plotted with CFPOST).
  • tmptrn—Create a point-by-point wall temperature distribution and/or boundary layer transition data, and write it into the common flow file for use by the Wind-US solver.
  • UsintrpltQ—Interpolate a solution from one unstructured grid to another.
  • cfpart—Split a single-zone unstructured common grid file into multiple zones.
  • windpar—Compute an estimate of the potential for parallel speed-up of a particular Wind-US case as a function of the number of processors, based on the likely number of grid points per processor.

There are still more, less commonly used utilities as well. All of the above “minor” utilities have a command line interface (no GUI). In most cases, however, there are only a limited number of options, so it's not hard to find your way around.

A Complete CFD Analysis Software Package

If you have made it through the whole review of the Wind-US package, you can see that the various utilities, combined with the Wind-US code offer a fairly complete CFD analysis software solution. Users must provide their own grid generation, but beyond that the NPARC solution is fairly complete. Most (but not all) also use an additional post-processor of some sort, but you don't have to.

If you have specific questions, feel free to contact me about the Wind-US utilities and I'll be happy to try to answer them.

When you are ready, you can return to the post-processing options for the Wind-US code, or return to the introduction page of this review of the Wind-US CFD analysis software .

Or, if you have all the information you need about the Wind-US code, you can check out the review of another CFD solver or return to the Innovative CFD home page and browse one of the other topics.

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