[Thi]

Hello all!

I am simulating the flow past a cylinder in a circular channel using the kOmegaSST turbulence model. Besides the usual output fields (p, U, k, omega, etc) I am also interested in the vorticity, and the force coefficients and wall shear stress on the cylinder. In order to write these additional fields I wrote functions in the function block of my controlDict (attached here as a txt file). My simulations run fine - no convergence issues. However, I am not able to get the usual output fields. The program only writes the additional fields.

I tried to run a case without the functions block. The program runs fine (I can attach the log file if you think that could help) but does not write any output. I tried restarting my computer in an attempt to call upon my random luck to workout. Unfortunately, luck has failed me. I am convinced this is a trivial error that I am overlooking but I am not able to figure this out! I am on sort of a time crunch - this is for a summer internship where we hope to run such simulations on different cylinders. Given how long these simulations tend to take to run, I would like to get the CFD framework figured out ASAP.

I would greatly appreciate your help in figuring this out!

Disclosure: This is also my first time posting on this forum. I thought I submitted this question but did not see the thread show up on the main page. Apologies if this is, in fact, a repeat posting.

Arthi

[jherb]

You set the writeInterval to 10 s which is the end time of your simulation. So no intermediate writes.



If you want to output every time iteration step, use:

writeControl    timeStep;

writeInterval   1;

If you want an output for each second, use:

writeControl    adjustableRunTime;

writeInterval   1;

[Thi]

Thanks, Joachim!

So adjustableRunTime is measured in seconds and not number of time steps? My reasoning behind declaring writeInterval 10 was that I wanted OpenFOAM to write the results every 10 time steps. Is there a way to specify this with adjustableRunTime control?

Arthi