[syavash]

Hi everyone!

Is it possible to add an 'interval' option to fieldAverage? In this way the Mean quantities would be only calculated, for instance, every n seconds which n is the interval specified by the user, rather than at every and each time-step.

I think this option would be very useful in case of LES simulations. To justify my suggestion, I mention "phase-locked averaging" which is necessary in many LES cases. As an example, consider a flow configuration which demonstrates a natural frequency. A simple case is the flow around a cylinder with nominal vortex shedding with a certain frequency. In this case, it would be very convenient if the user could record identical phase-locked snapshots of the flow and average them altogether to have a phase-averaged field (e.g. in 45phi, 90phi, 180phi, ...where phi is phase angle). Is it possible to implement such an option in the present functionObjects? If not, I believe it is viable to add this functionality to OpenFOAM and many users could benefit from it.

Best Regards,
Syavash