Learning Forum

[Ramy]

Dear all, nI ran an unsteady simulation (1000 time steps) and saved the data of multiple variables (e.g., static temperature, vorticity magnitude, etc.) as CFD post files (i.e., case and cdat files). I activated the data sampling for time statistics option before starting the iteration process. nMy question is:nHow to create time-averaged contours? for example, time averaged static temperature contours.nThank you.n

[Keyur Kanade]

As far I know, while creating contours, you can have that list under selection of variables. nPlease go through help manual for more details nRegards,nKeyurnHow to access Ansys Online Help DocumentnHow to show full resolution imagenGuidelines on the Student CommunitynHow to use Google to search within Ansys Student Communityn

[YasserSelima]

Create an expression from Named Expression. Then you can average this over the number of time steps you want. Make it 1000 and compute. hopefully this works.n

[Rob]

Look in Fluent post processing and you'll see time averaged as an option, choose that. nnot sure the expressions will help here as the value will be recalculated at each step. I have seen people use Python to collate many data sets though in the versions before the time averaged option was added into Fluent. n

[YasserSelima]

I actually use Matlab for postprocessing. But I thought this work as calculating the average of one value over 1000 time steps is not a big deal from calculation point of view. It might take a minute or so depending on the number of cells ...n

[Rob]

OK, in which case you may need to figure out the CFD Post syntax from a simple case, assuming it's not all binary. You may be better off with an ASCII output from Fluent-Export as that'll give you the position in the same file. n

[YasserSelima]

Thanks for the tipn

[Ramy]

Array Thanks for replying. Do you mean unsteady statistics contours which has for example mean static temperature? This is I found it in the solution tool in FLUENT. If yes, How can I do that in CFD-Post?.

[Rob]

You may need to add that data into the export for CFD Post as it's probably not there by default. Look in File menu. n