# ASPECT Newsletter #182

**URL:** <https://community.geodynamics.org/t/aspect-newsletter-182/3089>\
**Category:** ASPECT\
**Created:** [August 30, 2023, 4:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-182/3089 "2023-08-30T16:00:16Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**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:** [August 30, 2023, 4:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-182/3089/1 "2023-08-30T16:00:16Z")

</div>

Hello everyone!

This is ASPECT newsletter #182.  
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:

[#5378](https://github.com/geodynamics/aspect/pull/5378): Rework Blankenbach and King benchmarks to compare heat flux postprocessor methods. (implemented by [gassmoeller](https://github.com/gassmoeller))  
[#5377](https://github.com/geodynamics/aspect/pull/5377): Adds publications for August (implemented by [ljhwang](https://github.com/ljhwang); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#5376](https://github.com/geodynamics/aspect/pull/5376): add notebook for grain size plunge (implemented by [jdannberg](https://github.com/jdannberg))  
[#5375](https://github.com/geodynamics/aspect/pull/5375): sphinx doc: enable pdf (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#5374](https://github.com/geodynamics/aspect/pull/5374): sphinx doc: treat warnings as errors (implemented by [tjhei](https://github.com/tjhei))  
[#5373](https://github.com/geodynamics/aspect/pull/5373): (WIP) add velocity residual postprocessor. (implemented by [alarshi](https://github.com/alarshi))  
[#5372](https://github.com/geodynamics/aspect/pull/5372): add viscosity profile that is more consistent with original Steinberg… (implemented by [jdannberg](https://github.com/jdannberg); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#5370](https://github.com/geodynamics/aspect/pull/5370): Fix warnings when building documentation (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei))  
[#5369](https://github.com/geodynamics/aspect/pull/5369): Refactor remove\_net\_linear\_momentum (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei))  
[#5368](https://github.com/geodynamics/aspect/pull/5368): Remove duplicated assert (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [tjhei](https://github.com/tjhei))  
[#5367](https://github.com/geodynamics/aspect/pull/5367): require SUNDIALS and deal.II 9.5 (implemented by [tjhei](https://github.com/tjhei))  
[#5366](https://github.com/geodynamics/aspect/pull/5366): Hawaii flexure (implemented by [danieldouglas92](https://github.com/danieldouglas92))  
[#5365](https://github.com/geodynamics/aspect/pull/5365): Move entropy plugin to main aspect (implemented by [RanpengLi](https://github.com/RanpengLi); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#5364](https://github.com/geodynamics/aspect/pull/5364): release tasklist changes (implemented by [tjhei](https://github.com/tjhei); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#5363](https://github.com/geodynamics/aspect/pull/5363): Grain damage formulation (implemented by [gassmoeller](https://github.com/gassmoeller); reviewed by [jdannberg](https://github.com/jdannberg))  
[#5362](https://github.com/geodynamics/aspect/pull/5362): Add compositional dependence on viscosity in the Steinberger material model (implemented by [bobmyhill](https://github.com/bobmyhill); reviewed by [jdannberg](https://github.com/jdannberg))  
[#5359](https://github.com/geodynamics/aspect/pull/5359): make sure harmonic average particle interpolator does not average neg… (implemented by [jdannberg](https://github.com/jdannberg); reviewed by [gassmoeller](https://github.com/gassmoeller))  
[#5338](https://github.com/geodynamics/aspect/pull/5338): Change diffusion dislocation to log iteration (implemented by [lhy11009](https://github.com/lhy11009); reviewed by [bobmyhill](https://github.com/bobmyhill))

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

[#5371](https://github.com/geodynamics/aspect/issues/5371) Nonlinear solver does not converge in some models with nullspace removal (opened)

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/).