Error while postprocessing Channel flow case using Py4Incompact3d

[tambeyash]

Hi,

I ran the channel flow simulation using the default parameters. Then I followed this video for postprocessing using Py4Incompact3d.

I am getting the following error:

`
Post-processing channel flow.

list index out of range
UHHH
Computing YP
Found data field: umean
Found data field: uumean
Found data field: vmean
Found data field: vvmean
Found data field: wmean
Found data field: wwmean
./umean.dat
False False
./uumean.dat
False False
./vmean.dat
False False
./vvmean.dat
False False
./wmean.dat
False False
./wwmean.dat
False False
-22056420510.653744
Traceback (most recent call last):
File "/home/users/yashtambe/Py4Incompact3D/examples/channel_meeting/channel.py", line 357, in
main()
File "/home/users/yashtambe/Py4Incompact3D/examples/channel_meeting/channel.py", line 126, in main
utau = math.sqrt(tauw)
ValueError: math domain error
`

What am I doing wrong?

[slaizet]

Sorry for the slow answer, we are going to look into this.

[tambeyash]

Hi,
Thanks for you response. I made a small change in line 126 of the channel.py file.
From

 dUdy = (u[1] - u[0]) / (yp[input_file][1] - yp[input_file][0])

to

dUdy = (u[2] - u[1]) / (yp[input_file][2] - yp[input_file][1])

After this, I got the results similar to the video I mentioned previously