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Postprocessing transient data

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Old   September 12, 2017, 04:45
Default Postprocessing transient data
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Hi All

I am using Starccm+ transient analysis, I dint save before simulation any Solution Histories. So I am currently just saving each 1000 time step results like Case1@1e-2.sim, Case1@2e-2.sim etc like physical time. So I have the transient results like this and each case is 40GB so it takes time to load and hence I am looking for a suggestion how to post process these transient results. I also want the Instantaneous and averaged results and also animation of the contour plots. SO could someone suggest how to do it effectively and efficiently ? Thanks in advance.
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Old   September 12, 2017, 07:33
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It will take regardless of your approach. The problem is that commercial softwares usually save the data in ascii format and that will take time to load. If you can try to save them in binary. I always use python and Fortran for postpricessing. Both are quite effective !!!
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Old   September 12, 2017, 08:15
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For animation of contour plot you should have saved the required scene using update feature with trigger point as few time steps.
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Old   September 13, 2017, 02:23
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Just from my experience:

The problem with auto-exporting images of your scenes is that you won't be able to change anything afterwards. I auto-export my transient data with .trn- surface files and postprocess them later on in Star again. Maybe not the most effect way but it's at least pretty flexible...
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Old   September 13, 2017, 23:50
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Quote:
Originally Posted by AS_Aero View Post
Hi All

I am using Starccm+ transient analysis, I dint save before simulation any Solution Histories. So I am currently just saving each 1000 time step results like Case1@1e-2.sim, Case1@2e-2.sim etc like physical time. So I have the transient results like this and each case is 40GB so it takes time to load and hence I am looking for a suggestion how to post process these transient results. I also want the Instantaneous and averaged results and also animation of the contour plots. SO could someone suggest how to do it effectively and efficiently ? Thanks in advance.
This is where having some thought about what type of information you want up front is important. You should be using reports and monitors to get this type of information (instantaneous and averaged). You can export that information every time step and not retaining the information you do not need.

For animations, your best bet is to export out images of your representative scenes at the desired time steps. Then use a software like blender to make the videos after the fact. Also, I recommend doing some basic testing first to make sure all of your post processing features work first.
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Old   September 14, 2017, 02:30
Default transient simulation
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i hAve don transient simulations for 3 minutes and i have set monitors ,can i get concentration versus time graph in post processing? thanks in advance for help
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Old   September 14, 2017, 02:33
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i hAve don transient simulations for 3 minutes and i have set monitors ,can i get concentration versus time graph in post processing? thanks in advance for help
Only if you have setup the reports/monitors and associated plots before you ran the simulation. Or are using the simulation history files.
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