# Usage Support

**URL:** https://forum.nektar.info/c/usage-support/6.md

[Latest](https://forum.nektar.info/latest.md) · [Categories](https://forum.nektar.info/categories.md) · [Tags](https://forum.nektar.info/tags.md)

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## [About the Usage Support category](https://forum.nektar.info/t/about-the-usage-support-category/8)

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**Author:** [@ccantwel](https://forum.nektar.info/u/ccantwel)\
**Replies:** 0\
**Last updated:** [May 21, 2026, 9:03pm UTC](https://forum.nektar.info/t/about-the-usage-support-category/8 "2026-05-21T21:03:30Z")

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Get support with running Nektar++ solvers.

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## [Downstream decay of turbulence in a flat-plate boundary layer using SEM + SPM trip at P2](https://forum.nektar.info/t/downstream-decay-of-turbulence-in-a-flat-plate-boundary-layer-using-sem-spm-trip-at-p2/29)

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**Author:** [@yaso](https://forum.nektar.info/u/yaso)\
**Replies:** 3\
**Last updated:** [October 15, 2026, 4:20pm UTC](https://forum.nektar.info/t/downstream-decay-of-turbulence-in-a-flat-plate-boundary-layer-using-sem-spm-trip-at-p2/29 "2026-10-15T16:20:15Z")

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Dear Nektar++ forum, I am trying to reproduce the experimental turbulent boundary and have been encountering some issues with Synthetic Turbulence decaying downstream. I was wondering if anyone attempted to use this for…

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## [Reverse velocity from min()/max() inlet BC expression and using an interpolated field as inlet BC](https://forum.nektar.info/t/reverse-velocity-from-min-max-inlet-bc-expression-and-using-an-interpolated-field-as-inlet-bc/28)

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**Author:** [@yaso](https://forum.nektar.info/u/yaso)\
**Replies:** 0\
**Last updated:** [October 7, 2026, 8:36pm UTC](https://forum.nektar.info/t/reverse-velocity-from-min-max-inlet-bc-expression-and-using-an-interpolated-field-as-inlet-bc/28 "2026-10-07T20:36:57Z")

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Dear Nektar++ forum, I encountered a strange issue with one of my inlet boundary conditions. I was defining an inlet velocity profile using a piecewise expression containing min()/max() terms. With this definition I ob…

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## [IncNavierStokesSolver: Pressure field incorrect despite stable velocity field using Taylor-Hood Approximation on Polynomial order](https://forum.nektar.info/t/incnavierstokessolver-pressure-field-incorrect-despite-stable-velocity-field-using-taylor-hood-approximation-on-polynomial-order/17)

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**Author:** [@yaso](https://forum.nektar.info/u/yaso)\
**Replies:** 5\
**Last updated:** [October 7, 2026, 7:03am UTC](https://forum.nektar.info/t/incnavierstokessolver-pressure-field-incorrect-despite-stable-velocity-field-using-taylor-hood-approximation-on-polynomial-order/17 "2026-10-07T07:03:19Z")

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Hello Dear Nektar forum, hope my message finds everyone well. I have been working on a film-cooling hole nektar++ set-up case. I mainly followed the guidelines from Imperial front wing study and the user guide. I’ve run…