transient table in openlabs?

Hi Hussein,
If you wish to define the temperature as a function of theta and time using a table, I don't think OpenLabs is needed.

Did you already look into the possibility to use the Profile manager? You can create a .csv file with your data. 

If that does not meet your requirements, could you please explain why not?

Best regards,
Colinda

Hi Colinda, 

thx for your answer. Didn't see this option before,  but how can I also define then the timePeriod, the time the shockwave needs to travel around the annulus?  I think I have to pre-calculate the temperature values incorporating the phase shift and that's it?

greetings Hussein

Hi Hussein,

As you can see in the documentation of the Profile manager, you can define a .csv file that will have a header like this:

time, theta, temperature

Then you add points of the temperature profile in function of theta for the first time t1, then the profile for a next time t2, etc.

t1 theta11 T11

t1 theta12 T12

t1 theta13 T13

...

t2 theta21 T21

t2 theta22 T22

t2 theta23 T23

...

So you have a "grid" of points covering the theta range at the inlet, and define the temperature values for the points of this grid, at each computed time.

I hope this helps to set up your profile?

Best regards,
Colinda

Hi Colinda, exactly thx. Just need to know, how to define the header for arct(Vt/Vz) ( angle from axial direction). Maybe just arct(Vt/Vz) ? 

For the quantity to impose, like arct(Vt/Vz) you can use a simple name like flowangle.

I never use special characters like ( or / in the profile header. It seems to work though.

For the quantity to impose, like arct(Vt/Vz) you can use a simple name like flowangle.

I never use special characters like ( or / in the profile header. It seems to work though.

thx, unfortunately I get the error message: [NIOmnisSolverApl::getParameterDescription] Invalid combination of interpolation axis ( 5,12) of function absolute total pressure.

Your header for the profile of absolute total pressure is also something like:

time, theta, pressure 

? 

Yes

Can you please confirm which version you are using? 
If you are using a very old version, I would recommend to make a quick try in Fidelity 2023.2.

If hotline support is included with your license, and you are using a supported version, you may also create a support case on support.cadence.com.