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sandialabs / CACTUS

CACTUS (Code for Axial and Cross-flow TUrbine Simulation) is a turbine performance simulation code, based on a free wake vortex method, to study wind turbines and marine hydrokinetic (MHK) devices.
BSD 3-Clause "New" or "Revised" License
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Clarification on output files #26

Closed danrhouck closed 4 years ago

danrhouck commented 4 years ago

The User Guide says that, when FieldOutFlag is on, it outputs induced velocity on a 3D Cartesian grid. I'm getting an essentially 2D output as all of the x-coordinates are zero at all times. Is that what it really should be or is this an issue? If an issue, whos?

Additionally, WakeElemData can be output, which appears to be nominally the same except that it is not output on a Cartesian grid. Will implementing the wake grid options (nxgrid, nygrid, nzgrid, etc.) force this output onto a Cartesian grid?

Basically, I'm wondering what the easiest way is to get an output of 3D induced velocities on a Cartesian grid.

danrhouck commented 4 years ago

User Guide also says that default x-coordinates are 0 to 0, which explains the output. I have tested to confirm that the grid inputs only affect the FieldData output. I think the confusion came from an unpublished report using CACTUS that has an input file in the appendix. In that report, the FieldOutFlag is not on, but the grid is specified.