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Hi all,

I'm trying to model a simple reactor with a stir bar and chemical reactions happening on the reactor surface. I can solve for both the time-dependent flow field and concentration gradients of key reactants and products as a function of time. However, the flow field calculation is relatively quite expensive (~5 minutes to solve for only a few seconds of stir bar rotation, as compared to ~10 seconds for concentration gradients).

I want to model the concentration gradients over several hours, so I don't want to have to solve for the flow field over such a long time scale. The flow field is periodic (once the stir bar has completed one rotation, the flow field looks equivalent to t = 0). Is there a way repeatedly use these values in a study for the concentration gradient?

I don't want to use the trick where I make a new study and use the final time concentration values as the initial condition for the next study, because that will require a ton of studies to get the full several hours window.

I feel like i'm missing something simple.

Thanks for the help!