TAGGED: fluent-error
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November 19, 2024 at 2:59 pm
asp89
SubscriberHello everyone,
I’ve been following the Fluent Tutorial 33.2 for the Virtual Blade Method (VBM) applied to a propeller simulation. Everything has been progressing well until I reach the point where I need to load the airfoil data.
However, I keep encountering the following error:
Warning: VBM pre-processing is not completed due to the following. Fix the airfoil file and then apply VBM to proceed.
ERROR: Cannot open airfoil table naca16016.dat.I’ve double-checked the file location and confirmed that the naca16016.dat file exists in the directory. I’ve also made sure the file permissions are set correctly, but I still get this error.
Has anyone else encountered this issue? What could be causing this error, and how can I resolve it?
Thanks in advance for any help!
Best regards,
Arya -
November 19, 2024 at 3:30 pm
Rob
Forum ModeratorDoes the path contain any odd characters? I'm not aware of any problems with VBM but must admit I've not tried it in it's current form.
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November 19, 2024 at 3:48 pm
asp89
SubscriberHi Rob,
The file path looks pretty standard to me—it's simply located at E:\VBM\prop. If you think of anything else, feel free to let me know!
Additionally for the airfoil naca16016.dat file, I haven't made any changes to it; I just downloaded it directly from the tutorial.
Best,
Arya -
November 19, 2024 at 4:01 pm
Rob
Forum ModeratorIt's 34 now, https://ansyshelp.ansys.com/public/account/secured?returnurl=/Views/Secured/corp/v242/en/flu_tg/flu_tg_vbm.html but still ought to be much the same.
I'm assuming you did unzip and aren't trying to open from the archive?
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November 19, 2024 at 4:12 pm
asp89
SubscriberYes, I definitely unzipped the files. The mesh is working perfectly fine, and everything is going smoothly up to step 34.2.3.12, where it then displays the error in the VBM pre-processing
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November 19, 2024 at 4:31 pm
Rob
Forum ModeratorOdd, I've got an Intern checking the tutorial here so may know more tomorrow.
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November 20, 2024 at 3:55 pm
Rob
Forum ModeratorIt's working here. There's a note about the profile format in the manual - does the tutorial file agree with that?
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November 20, 2024 at 4:12 pm
asp89
SubscriberI think so here is dat file I have, it looks the same as the required format
naca16016
2
cl
10000
0.01
19
-180 -0.726282
-8 -0.726282
-7 -0.622431
-6 -0.518581
-5 -0.41473
-4 -0.31088
-3 -0.207029
-2 -0.103178
-1 -0.000672425
0 0.104523
1 0.208374
2 0.312224
3 0.405996
4 0.499767
5 0.590514
6 0.681261
7 0.749592
8 0.817924
180 0.817924
cd
10000
0.01
19
-180 0.052773
-8 0.052773
-7 0.0448664
-6 0.0399598
-5 0.0266581
-4 0.0180578
-3 0.00917065
-2 0.00714089
-1 0.00541159
0 0.00525418
1 0.00541159
2 0.00714089
3 0.00917065
4 0.0180578
5 0.0266581
6 0.0369598
7 0.0448664
8 0.052773
180 0.052773 -
November 20, 2024 at 4:53 pm
Rob
Forum ModeratorNo problems this side. Can you check the profile in Wordpad or Notepad++ (or whatever) for white space characters. Otherwise no idea as our intern had no problems.
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