# Friction coefficient along the wall
**URL:** https://discourse.paraview.org/t/friction-coefficient-along-the-wall/11915
**Category:** ParaView Support
**Created:** [April 18, 2023, 12:04pm UTC](https://discourse.paraview.org/t/friction-coefficient-along-the-wall/11915 "2023-04-18T12:04:35Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@xq520](https://discourse.paraview.org/u/xq520)
#### Post date: [April 18, 2023, 12:04pm UTC](https://discourse.paraview.org/t/friction-coefficient-along-the-wall/11915/1 "2023-04-18T12:04:35Z")
Hello, I want to calculate the wall friction coefficient. And repeat the following steps, but the result is wrong. Could someone give me more details? The file is attached.
[https://www.paraview.org/pipermail/paraview/2016-October/038305.html](https://www.paraview.org/pipermail/paraview/2016-October/038305.html)
> **[ramp.vtu](https://drive.google.com/file/d/1oFiIGy0d8TFWIW-p2qRyTCKkPOmprQK6/view?usp=sharing)**
>
> Google Drive file.
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### Author:  [@xq520](https://discourse.paraview.org/u/xq520)
#### Post date: [April 18, 2023, 2:35pm UTC](https://discourse.paraview.org/t/friction-coefficient-along-the-wall/11915/2 "2023-04-18T14:35:19Z")
@ [Nicolas Vuaille (Kitware)](https://discourse.paraview.org/u/nicolas.vuaille) Sorry to bother you. Could someone help me?
With best regards