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How to Connect 2 cases in CFD Post

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Old   May 29, 2017, 01:29
Question How to Connect 2 cases in CFD Post
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AK5
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Hi,

I have carried out a simulation in CFX, It has run for 8 seconds ( 64 time steps), then i have stopped the solver to check the results.

Next i continue the solver calculation and when the simulation gets completed at 20 seconds, then in cfd post i want to extract pressure vs Time graph, it is plotting graph from 8th second to 20th second.

In Timestep selector, its showing 2 cases, First upto 8 secs and 2nd one upto 20 seconds.

Is there anything that i can do, so that the graph plotted will start from 0 sec to 20th second?

Or How can i join 2 cases?

Thankyou for reply in Advance
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Old   May 29, 2017, 02:46
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urosgrivc
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try to load first results into post than under time selector select that folder icon and add timesteps from the second simulation
so you will only have one simulation vith all timesteps and not two seperate simulations.
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Old   May 30, 2017, 03:04
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When loading your case file in Post you should tick the option (right side of the case file selector):
"Load complete History as single case".
In general this works, but only under 2 (maybe 3 conditions):
- You started your second file as "-continue-history-from-file" with your first result as initialisation
- You load in Post the SECOND resultfile
(- here I'm not 100% sure: the folder structure and location where you did your calculations are the same).

Generally then you should have all timesteps available in one case in Post.
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Old   May 30, 2017, 04:29
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Thank you for your reply,

I have tried that, the time steps get added (it says partial added next to it) but it will not load the times next to it, so when i plot graph pressure will vary but not time, hence it will be a vertical line (all the added time steps will show "0 second" next to it)
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Old   May 30, 2017, 04:33
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Thank you Monkey1,

Loading results as "complete history as single case worked"
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Old   May 30, 2017, 05:11
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Quote:
Originally Posted by AK5 View Post
Thank you for your reply,

I have tried that, the time steps get added (it says partial added next to it) but it will not load the times next to it, so when i plot graph pressure will vary but not time, hence it will be a vertical line (all the added time steps will show "0 second" next to it)
Yes that's a common problem when loading additional timesteps, that are not part of the "original" solution.
Stumbled over that several times and got annoyed by it every single time
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