Difference between revisions of "PHASTA/Probe points"
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| − | + | [[PHASTA]] is capable of outputting solution field variables such as velocity, pressure, eddy viscosity, and temperature (if applicable) at specified locations in the fluid domain. | |
== Using Probe Points == | == Using Probe Points == | ||
| − | To enable probe points, the file xyzts.dat and the folder varts/ must both be present in the n-procs_case directory that is being used by Phasta. The file xyzts.dat should contain a one line, space delineated header with the following numeric data | + | To enable probe points, the file xyzts.dat and the folder varts/ must both be present in the n-procs_case directory that is being used by Phasta. The file xyzts.dat should contain a one line, space delineated header with the following numeric data (based of of the version in /users/mattb2/phasta-tocmake/...) |
*number of probes | *number of probes | ||
*frequency (i.e. the number of steps between sampling) | *frequency (i.e. the number of steps between sampling) | ||
| − | *tolerance | + | *tolerance (unused) |
| − | *iterate ( | + | *iterate (unused) |
| − | * | + | *varcod (unused) |
The lines following the header should contain x, y, z data specifying the location of the probe points. As an example, a valid xyzts.dat file for an incompressible run would look something like: | The lines following the header should contain x, y, z data specifying the location of the probe points. As an example, a valid xyzts.dat file for an incompressible run would look something like: | ||
| Line 19: | Line 19: | ||
0.3 -0.02 0.01 | 0.3 -0.02 0.01 | ||
| + | ...although a header of 4 1 1 1 1 should be equally as valid. | ||
| + | |||
| + | For multiple cases which use the same probe locations, it is often convenient to keep xyzts.dat in a lower level directory and soft link to it. That is, the setup process becomes | ||
| + | cd n-procs_case | ||
| + | mkdir varts | ||
| + | ln -s ../../xyzts.dat . | ||
Note: in most versions of Phasta, the varts.*.sn files are created prior to the calculation of the first time step, but are actually written to ''after'' finishing the last time step. This means that if a run is interrupted (e.g. by not requesting enough time in a queue), no useful data will be generated. | Note: in most versions of Phasta, the varts.*.sn files are created prior to the calculation of the first time step, but are actually written to ''after'' finishing the last time step. This means that if a run is interrupted (e.g. by not requesting enough time in a queue), no useful data will be generated. | ||
| + | |||
| + | == Location in Phasta == | ||
| + | |||
| + | In the compressible version of Phasta, xyzts.dat is read exclusively in | ||
| + | phSolver/compressible/itrdrv.f. | ||
| + | |||
| + | [[Category:PHASTA]] | ||
Latest revision as of 10:44, 18 September 2022
PHASTA is capable of outputting solution field variables such as velocity, pressure, eddy viscosity, and temperature (if applicable) at specified locations in the fluid domain.
Using Probe Points
To enable probe points, the file xyzts.dat and the folder varts/ must both be present in the n-procs_case directory that is being used by Phasta. The file xyzts.dat should contain a one line, space delineated header with the following numeric data (based of of the version in /users/mattb2/phasta-tocmake/...)
- number of probes
- frequency (i.e. the number of steps between sampling)
- tolerance (unused)
- iterate (unused)
- varcod (unused)
The lines following the header should contain x, y, z data specifying the location of the probe points. As an example, a valid xyzts.dat file for an incompressible run would look something like:
4 1 1.0e-6 1 5 0.2 -0.02 -0.01 0.2 -0.02 0.01 0.3 -0.02 -0.01 0.3 -0.02 0.01
...although a header of 4 1 1 1 1 should be equally as valid.
For multiple cases which use the same probe locations, it is often convenient to keep xyzts.dat in a lower level directory and soft link to it. That is, the setup process becomes
cd n-procs_case mkdir varts ln -s ../../xyzts.dat .
Note: in most versions of Phasta, the varts.*.sn files are created prior to the calculation of the first time step, but are actually written to after finishing the last time step. This means that if a run is interrupted (e.g. by not requesting enough time in a queue), no useful data will be generated.
Location in Phasta
In the compressible version of Phasta, xyzts.dat is read exclusively in
phSolver/compressible/itrdrv.f.
