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save lift and drag convergence histories in fluent14

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Old   August 8, 2013, 15:27
Unhappy save lift and drag convergence histories in fluent14
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Ali.E
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Hello my friends,
I work with Fluent 14 and I want to save lift and drag convergence histories; I have used the monitor option and acted write option too. Therefore, two files have existed but only result of present time is saved in the files and actually, I lost the result of other times steps.
Do you have any solution for it? I want to save all lift and drag coefficient in the files according time to plot convergence history.
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Old   August 8, 2013, 15:52
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Hi!
if u want to plot Cd or Cl per iteration history, i have a solution for u.

go to monitors and create Drag. in opened dialog box, active Write and then type .txt in front of the file name.
finally go to work directory and from dp0 > FFF > fluent, u can access iteration history in a txt format.

Good luck!
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Old   August 8, 2013, 15:59
Default per zone in ansys fluent 14
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rasoul b
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Hi, dear friends

i have two surface and i want to monitor drag history per time. when i use per zone tick, the written data is separate but graphical fluent show average of two. i.e. two curve displayed in one average curve.

can anyone help me.
thanks
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Old   August 8, 2013, 17:44
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Ali.E
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Hello again
I did do as you said but the problem is that only one Cl per last iteration is saved in the generated txt file. All of text in the file is as below:
"Lift Convergence"
"Flow Time" "Cl"
2.58750e+00 6.19072e-01


but I need Cl per every iteration. May I make any comments for this problem?

cheers,

Quote:
Originally Posted by Qube View Post
Hi!
if u want to plot Cd or Cl per iteration history, i have a solution for u.

go to monitors and create Drag. in opened dialog box, active Write and then type .txt in front of the file name.
finally go to work directory and from dp0 > FFF > fluent, u can access iteration history in a txt format.

Good luck!
Attached Files
File Type: txt clhistory.txt (72 Bytes, 15 views)
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Old   August 9, 2013, 03:22
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you should do it before starting to solve!
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