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.