Learning Forum

[Ales23]

Dear all,nI have used the command /solve/set/equations/flow/no. But apparently ANSYS still iterate for example 200 iterations. Although, it doesn't solve the flow equations as they are blocked. Is there a way how to disable also the iterations?nThank younKind regards,nAles n

[Rob]

Why are you iterating if you don't want the solver to? Note, if other equations are active (eg turbulence) then that will be solved. Flow just covers momentum. n

[Ales23]

My simulation includes DPM and I update the flow after xx number of time stepsn

[Rob]

If you just want to update the DPM and freeze the flow make sure you deactivate all of the fluid equations. For most models that'll be flow and turbulence. Then you should just be doing the DPM calculation every time step. n

[Ales23]

I have a laminar flow I used: /solve/set/equations/flow/nonBut it still iterates for example 200 iterations.nn

[Ales23]

in fact it doesn't write the number of iterations. BUt it takes time to perform each time step. Let's imagine after the first time step I have 200 iterations and I update flow after 10 time steps; one would expect to start with iteration number 201 but I start with 2001. Which means that it has performed 200 iterations for each time step although, it hasn't solve the flow (this is correct)n

[Rob]

It will be updating the particle position for each time step, this does take some time. n

[Ales23]

Yes, to this I understand but just the time is not always the same. nIf I set the number of iterations to 3 or 200. The time to solve one time step is way different (I tried to use it also without DPM) .n

[Rob]

Check in the GUI, has the equation been disabled? I've checked here and it is behaving as expected, but I usedn/solve/set/equations/flow non

[Ales23]

Yes it writes me /solve/set/equations/flow/no nWhen I perform the analysis again I have to turn the equations againnI have 2 execute commandsn1) every 1 time step- /solve/set/equations/flow/no n2) every 10 time step= /solve/set/equations/flow/yesnnWhen I saw your command, are you using it like this: ' /solve/set/equations/flow no ' ?n Thank younn

[Rob]

I did. As the last option isn't a menu I wondered if the / was necessary or indeed a problem. n

[Ales23]

OK, I will try it without /n