# \[OpenFAST\] Recommended module time step (s)

**URL:** <https://forums.nlr.gov/t/openfast-recommended-module-time-step-s/5829>\
**Category:** Computer-Aided Engineering Software Tools\
**Created:** [October 10, 2023, 8:30am UTC](https://forums.nlr.gov/t/openfast-recommended-module-time-step-s/5829 "2023-10-10T08:30:01Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\
**Post date:** [October 10, 2023, 12:26pm UTC](https://forums.nlr.gov/t/openfast-recommended-module-time-step-s/5829/2 "2023-10-10T12:26:54Z")

</div>

Dear @Hugo.Bontemps,

Unless you are changing mass, stiffness, or geometry parameters, the time steps specified in the r-test models can be considered sufficient for convergence and stability.

Guidance for selecting time steps for new models has been discussed in many forum topics, e.g., see: [PTDM implementation - #16 by Jason.Jonkman](https://forums.nlr.gov/t/ptdm-implementation/4543/16).

Best regards,

---

_[View the full topic](https://forums.nlr.gov/t/openfast-recommended-module-time-step-s/5829)._