7.6. Frequently Asked Questions#
Where are my Flow360 credentials stored locally?#
Your Flow360 API key is stored locally in a configuration file at:
~/.flow360/config.toml
Does Flexcompute charge for data storage?#
For some data storage we do not charge, but for some data we do. See details:
resource |
storage price |
|---|---|
surface mesh |
free |
volume mesh |
free |
case |
0.00166 FlexUnit/GB/day (or 0.05 FlexUnit/GB/month) |
To reduce data storage costs we encourage users to:
Delete case if results will no longer be needed
Download results to local drive and delete case from Flow360
SolverError: Error when calculating patch interpolation coefficients. What does this mean?#
When running a case with a rotational volume zone, if you get a solver error that looks like this:
Error when calculating patch interpolation coefficients. Patch has a distance mismatch of 0.7883948e-01
with matching patch at location [1.7592032e-1, 1.0184957e-03, -4.7304816e-1].
This means that at a given time step, once the mesh has been rotated according to the prescribed motion, the maximum distance between the two interfaces is 0.7883948e-01. If this maximum distance between the two patches is greater than 20% of the maximum edge length contained in either patch, this error will be raised. It indicates that either the center of rotation/axis of rotation is likely incorrect or that the mesh is too coarse in this location.
What does the “VelocityRelative” mean in the volumeOutput of the case configuration?#
In a rotational domain, the absolute velocity, \(\overrightarrow{\boldsymbol{U}}_\text{absolute}\), of each fluid element could be treated as the summation of a relative velocity, \(\overrightarrow{\boldsymbol{U}}_\text{relative}\), and a velocity due to the rotating frame, \(\overrightarrow{\Omega}\times \overrightarrow{r}\). The “VelocityRelative” means the \(\overrightarrow{\boldsymbol{U}}_\text{relative}\):
It should be noted that the above relative velocity is zero on any no-slip walls within rotational blocks.