# Streamlines in a relative referential

**URL:** https://discourse.paraview.org/t/streamlines-in-a-relative-referential/12077
**Category:** In Situ Support
**Created:** [May 12, 2023, 7:11am UTC](https://discourse.paraview.org/t/streamlines-in-a-relative-referential/12077 "2023-05-12T07:11:00Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Theo1789](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/t/fbc32d/32.png) [@Theo1789](https://discourse.paraview.org/u/Theo1789)
#### Post date: [May 12, 2023, 7:11am UTC](https://discourse.paraview.org/t/streamlines-in-a-relative-referential/12077/1 "2023-05-12T07:11:00Z")

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Hello everyone,  
I am working on a centrifugal pump and I would have liked to trace the streamlines in the relative referential of the wheel so that the streamlines within the wheel are parallel to the blades. Because in the general referential, these streamlines are perpendicular to the blades.

Thanks in advance,

Théo