# ASPECT Newsletter #110

**URL:** <https://community.geodynamics.org/t/aspect-newsletter-110/1461>\
**Category:** ASPECT\
**Created:** [September 22, 2020, 4:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-110/1461 "2020-09-22T16:00:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rgassmoeller](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/rgassmoeller/32/49_2.png) [@rgassmoeller](https://community.geodynamics.org/u/rgassmoeller)\
**Post date:** [September 22, 2020, 4:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-110/1461/1 "2020-09-22T16:00:20Z")

</div>

Hello everyone!

This is ASPECT newsletter #110.  
It automatically reports recently merged features and discussions about the ASPECT mantle convection code.

Below you find a list of recently proposed or merged features:

[#3852](https://github.com/geodynamics/aspect/pull/3852): Modified documentation for a typo. (implemented by [alarshi](https://github.com/alarshi))  
[#3851](https://github.com/geodynamics/aspect/pull/3851): Boundary velocity residual (implemented by [alarshi](https://github.com/alarshi))  
[#3850](https://github.com/geodynamics/aspect/pull/3850): [WIP] Benchmark gravity postprocessor with a prem density material model plugin (implemented by [LudovicJnnt](https://github.com/LudovicJnnt))  
[#3848](https://github.com/geodynamics/aspect/pull/3848): CI: switch to newer 9.2 deal.II image (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#3847](https://github.com/geodynamics/aspect/pull/3847): fix a minus (implemented by [LudovicJnnt](https://github.com/LudovicJnnt))  
[#3846](https://github.com/geodynamics/aspect/pull/3846): Remove assert natural coordinates (implemented by [anne-glerum](https://github.com/anne-glerum); reviewed by [tjhei](https://github.com/tjhei))  
[#3845](https://github.com/geodynamics/aspect/pull/3845): Add to the documentation of a function. (implemented by [bangerth](https://github.com/bangerth))  
[#3844](https://github.com/geodynamics/aspect/pull/3844): Cookbook: Prescribed velocity ascii data (implemented by [bobmyhill](https://github.com/bobmyhill))  
[#3832](https://github.com/geodynamics/aspect/pull/3832): Fix a couple of funny uses of \si. (implemented by [bangerth](https://github.com/bangerth); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#3600](https://github.com/geodynamics/aspect/pull/3600): Boundary velocity residual postprocessor (implemented by [alarshi](https://github.com/alarshi); reviewed by [gassmoeller](https://github.com/gassmoeller))

And this is a list of recently opened or closed discussions:

[#3849](https://github.com/geodynamics/aspect/issues/3849) A problem on Prescribed internal velocity (opened)  
[#3843](https://github.com/geodynamics/aspect/issues/3843) Add assert when ‘fixed elastic time step’ is smaller than ‘max computational time step’ (opened)  
[#3630](https://github.com/geodynamics/aspect/issues/3630) slow CI since switching to deal.II 9.2 (closed)

A list of all major changes since the last release can be found at [this website](https://aspect.geodynamics.org/doc/doxygen/changes_current.html).

Thanks for being part of the community!

Let us know about questions, problems, bugs or just share your experience by visting our [forum](https://community.geodynamics.org/c/aspect), or by opening issues or pull requests on [Github](https://www.github.com/geodynamics/aspect).  
Additional information can be found at our [official website](https://aspect.geodynamics.org/), and CIG’s [ASPECT website](https://geodynamics.org/cig/software/aspect/).