The PI-DSMC Software package relies on third party visualization tools for post-processing. PI-DSMC contains a program called PIDSMCoutput that converts the sampled flow filed quantities to different file formats. The table below lists the available command line parameters for PIDSMCoutut.
| name | required / optional | description |
|---|---|---|
| -d directory | required | Define the working directory. |
| -h | optional | Show the help screen. |
| -s x | optional | Output every x-th value in order to reduce the resolution and the file size. |
| -points file | optional | Define a list of points. |
| -format x | optional | Set the output format. 1: flow VTK, 2: flow MAT, 3: flow PLT, 4: surface text, 5: surface Tecplot text, 6: points text |
| -species x | optional | Set the species. 0: gas mixture, x: species x |
| -quantities x | optional | Set the quantities. 1: all, 2: single, 3: all in individual files, 4: physical quantities only |
| -qm | optional | Same as -quantities 4 |
| -dat x | optional | Set the quantity for output. Value must be determined from the menu. |
| -file name | optional | Set the name of the output file. Extension will be added automatically. |
| -raw | optional | Generate raw files instead of vtk files. |
The quality of a DSMC calculation can be judged by the ratio of the local mean separation of the collision partners to the mean free path (mcs/mfp). For a good DSMC calculation this ratio should be less than 1/3 throughout the flow. The mcs/mfp ratio can be reduced by using more molecules.
Please note: This page applies to PI-DSMC V3 which runs on CPUs.