# \#openifs-numerical-solver

**URL:** https://forum.ecmwf.int/tag/openifs-numerical-solver/167.md

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## [Use Euler dynamics instead of semi-Langrangian](https://forum.ecmwf.int/t/use-euler-dynamics-instead-of-semi-langrangian/12179)

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**Author:** [@Glenn\_Carver](https://forum.ecmwf.int/u/Glenn_Carver)\
**Replies:** 1\
**Last updated:** [31 October 2018 19:11 UTC](https://forum.ecmwf.int/t/use-euler-dynamics-instead-of-semi-langrangian/12179 "2018-10-31T19:11:18Z")

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Hi, I want to use the older Euler dynamics in OpenIFS for some testing rather than the semi-Lagrangian scheme. What namelist settings and other changes do I need to make to the model? Thanks, RH.