# Assigning surface roughness to a fairing

**URL:** <https://www.simscale.com/forum/t/assigning-surface-roughness-to-a-fairing/87769>\
**Category:** Fluid Flow / CFD\
**Created:** [February 21, 2020, 5:38am UTC](https://www.simscale.com/forum/t/assigning-surface-roughness-to-a-fairing/87769 "2020-02-21T05:38:34Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![Ricardopg](https://www.simscale.com/forum/user_avatar/www.simscale.com/ricardopg/32/26909_2.png) [@Ricardopg](https://www.simscale.com/forum/u/Ricardopg)\
**Post date:** [February 21, 2020, 1:52pm UTC](https://www.simscale.com/forum/t/assigning-surface-roughness-to-a-fairing/87769/2 "2020-02-21T13:52:33Z")

</div>

Hey!

I recall reading about the implications of surface roughness in the modeling somewhere but can’t quite remember where it was 😐. Make sure to check out this [video](https://www.youtube.com/watch?v=vYbRUmVTmGM) about the topic.

Wall function versus full resolution is related to [yplus](https://www.simscale.com/forum/t/what-is-y-yplus/82394). If you’re interested in yplus, also make sure to check this [thread](https://www.simscale.com/forum/t/wall-distance-experience-do-these-calculations-look-right-y-yplus/86796).

/Ric

---

_[View the full topic](https://www.simscale.com/forum/t/assigning-surface-roughness-to-a-fairing/87769)._