# ASPECT Newsletter #90

**URL:** <https://community.geodynamics.org/t/aspect-newsletter-90/849>\
**Category:** ASPECT\
**Created:** [October 21, 2019, 7:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-90/849 "2019-10-21T19:00:15Z")\
**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:** [October 21, 2019, 7:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-90/849/1 "2019-10-21T19:00:15Z")

</div>

Hello everyone!

```
       This is ASPECT newsletter #90.

```

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:

[#3270](https://github.com/geodynamics/aspect/pull/3270): Add another paper that uses ASPECT. (proposed by [jdannberg](https://github.com/jdannberg))  
[#3269](https://github.com/geodynamics/aspect/pull/3269): more c++ override (proposed by [tjhei](https://github.com/tjhei))  
[#3268](https://github.com/geodynamics/aspect/pull/3268): Add a paper that uses ASPECT. (proposed by [bangerth](https://github.com/bangerth); merged)  
[#3267](https://github.com/geodynamics/aspect/pull/3267): Extend parse function to allow subentries (proposed by [gassmoeller](https://github.com/gassmoeller))  
[#3266](https://github.com/geodynamics/aspect/pull/3266): Correct inflow boundary condition for Volume of fluid method (proposed by [class4kayaker](https://github.com/class4kayaker))  
[#3265](https://github.com/geodynamics/aspect/pull/3265): [WIP] Mesh def initial topo (proposed by [anne-glerum](https://github.com/anne-glerum))  
[#3264](https://github.com/geodynamics/aspect/pull/3264): Add option to turn off dynamic topography contribution in geoid calculation (proposed by [Shangxin-Liu](https://github.com/Shangxin-Liu))  
[#3263](https://github.com/geodynamics/aspect/pull/3263): implement matrix-free 3d no-normal flux (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3261](https://github.com/geodynamics/aspect/pull/3261): matrix-free free-slip and no-slip conflict (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3260](https://github.com/geodynamics/aspect/pull/3260): cleanup virtual destructors (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3259](https://github.com/geodynamics/aspect/pull/3259): use override instead of virtual (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3257](https://github.com/geodynamics/aspect/pull/3257): [WIP] add drucker prager rheology module (proposed by [naliboff](https://github.com/naliboff))  
[#3256](https://github.com/geodynamics/aspect/pull/3256): fix checkpoint/resume for deal.II \>=9.1 (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3251](https://github.com/geodynamics/aspect/pull/3251): GMG: implement no normal flux for 2d spherical and shells (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3250](https://github.com/geodynamics/aspect/pull/3250): modernize some for loops (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3249](https://github.com/geodynamics/aspect/pull/3249): use c++ override instead of virtual (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3247](https://github.com/geodynamics/aspect/pull/3247): implement higher order Stokes GMG (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3246](https://github.com/geodynamics/aspect/pull/3246): GMG: allow no cheap iterations (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3245](https://github.com/geodynamics/aspect/pull/3245): fix aliasing warning (proposed by [tjhei](https://github.com/tjhei); merged)  
[#3240](https://github.com/geodynamics/aspect/pull/3240): matrix-free: use AssertThrow (proposed by [tjhei](https://github.com/tjhei); merged)

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

[#3262](https://github.com/geodynamics/aspect/issues/3262) Initial global refinement and maximum/minimum refinement function varies with number of cores (opened)  
[#3258](https://github.com/geodynamics/aspect/issues/3258) Derived classes should use `override` instead of `virtual` (opened)  
[#3255](https://github.com/geodynamics/aspect/issues/3255) underscore vs dash in .prm (opened)  
[#3254](https://github.com/geodynamics/aspect/issues/3254) Restart does not take into account initial topography of the mesh. (opened)  
[#3253](https://github.com/geodynamics/aspect/issues/3253) Resume computation fails (opened and closed)  
[#3252](https://github.com/geodynamics/aspect/issues/3252) Limit the numeric solutions (v, T) if there are wrong values in some elements (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/).
```