# Fluid Instabilities

**URL:** <https://community.geodynamics.org/t/fluid-instabilities/3215>\
**Category:** ASPECT\
**Tags:** rayleigh\
**Created:** [January 3, 2024, 11:58am UTC](https://community.geodynamics.org/t/fluid-instabilities/3215 "2024-01-03T11:58:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Soham](https://avatars.discourse-cdn.com/v4/letter/s/7ea924/32.png) [@Soham](https://community.geodynamics.org/u/Soham)\
**Post date:** [January 3, 2024, 11:58am UTC](https://community.geodynamics.org/t/fluid-instabilities/3215/1 "2024-01-03T11:58:14Z")

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Can convective instabilities like the R-T instability be generated via any Aspect pre-written cookbook? Which one should it be?

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**Author:** ![bobmyhill](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/bobmyhill/32/38_2.png) [@bobmyhill](https://community.geodynamics.org/u/bobmyhill)\
**Post date:** [January 3, 2024, 12:14pm UTC](https://community.geodynamics.org/t/fluid-instabilities/3215/2 "2024-01-03T12:14:32Z")

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Have you tried searching the manual? [Search - ASPECT 2.6.0-pre](https://aspect-documentation.readthedocs.io/en/latest/search.html?q=rayleigh-taylor)

Best wishes,  
Bob

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**Author:** ![Soham](https://avatars.discourse-cdn.com/v4/letter/s/7ea924/32.png) [@Soham](https://community.geodynamics.org/u/Soham)\
**Post date:** [January 8, 2024, 8:02am UTC](https://community.geodynamics.org/t/fluid-instabilities/3215/3 "2024-01-08T08:02:13Z")

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When compiling the AV\_Rayleigh\_Taylor.prm file, the error message show that the shared library is missing :  
" Could not successfully load shared library  
\<./libanisotropic\_viscosity.debug.so\>. The operating system reports  
that the error is this: \<./libanisotropic\_viscosity.debug.so: cannot  
open shared object file: No such file or directory\>. "  
How to solve this ? How can we obtain this library?

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**Author:** ![bobmyhill](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/bobmyhill/32/38_2.png) [@bobmyhill](https://community.geodynamics.org/u/bobmyhill)\
**Post date:** [January 8, 2024, 9:50am UTC](https://community.geodynamics.org/t/fluid-instabilities/3215/4 "2024-01-08T09:50:40Z")

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Dear Soham,

Please see this section of the manual:  
[https://aspect-documentation.readthedocs.io/en/latest/user/benchmarks/benchmark-run.html#sec-benchmark-run](https://aspect-documentation.readthedocs.io/en/latest/user/benchmarks/benchmark-run.html#sec-benchmark-run)

We’ll probably move this section into a more prominent place soon; you aren’t the first person to have had trouble finding the info.

Best wishes,  
Bob