# ASPECT Newsletter #72

**URL:** https://community.geodynamics.org/t/aspect-newsletter-72/402
**Category:** ASPECT
**Created:** [January 31, 2019, 8:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-72/402 "2019-01-31T20:00:25Z")
**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: [January 31, 2019, 8:00pm UTC](https://community.geodynamics.org/t/aspect-newsletter-72/402/1 "2019-01-31T20:00:25Z")

</div>

Hello everyone!

```
       This is ASPECT newsletter #72.

```

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:

[#2793](https://github.com/geodynamics/aspect/pull/2793): memory statistics: add VmPeak (proposed by [tjhei](https://github.com/tjhei))

[#2792](https://github.com/geodynamics/aspect/pull/2792): Write geoid output point-wise (proposed by [gassmoeller](https://github.com/gassmoeller))

[#2791](https://github.com/geodynamics/aspect/pull/2791): Output dynamic topography as point-wise vector (proposed by [gassmoeller](https://github.com/gassmoeller))

[#2790](https://github.com/geodynamics/aspect/pull/2790): allows 2d sinker (proposed by [tcclevenger](https://github.com/tcclevenger))

[#2789](https://github.com/geodynamics/aspect/pull/2789): “no Advection, no Stokes” solver scheme (proposed by [LudovicJnnt](https://github.com/LudovicJnnt); merged)

[#2787](https://github.com/geodynamics/aspect/pull/2787): Add a higher resolution heat flux visualization postprocessor (proposed by [gassmoeller](https://github.com/gassmoeller))

[#2786](https://github.com/geodynamics/aspect/pull/2786): extend two parameter descriptions (proposed by [tjhei](https://github.com/tjhei); merged)

[#2785](https://github.com/geodynamics/aspect/pull/2785): Add assert when the variable temperature\_for\_viscosity becomes zero. (proposed by [MFraters](https://github.com/MFraters); merged)

[#2784](https://github.com/geodynamics/aspect/pull/2784): Slightly improve accuracy of particle interpolation for active particles in time-varying flow. (proposed by [gassmoeller](https://github.com/gassmoeller))

[#2783](https://github.com/geodynamics/aspect/pull/2783): Allow cell-wise constant composition element (proposed by [gassmoeller](https://github.com/gassmoeller); merged)

[#2781](https://github.com/geodynamics/aspect/pull/2781): Remove indentation in some timing sections (proposed by [gassmoeller](https://github.com/gassmoeller); merged)

[#2780](https://github.com/geodynamics/aspect/pull/2780): constraints: periodic before hanging [WIP] (proposed by [tjhei](https://github.com/tjhei))

[#2778](https://github.com/geodynamics/aspect/pull/2778): world builder update 2 (proposed by [tjhei](https://github.com/tjhei); merged)

[#2777](https://github.com/geodynamics/aspect/pull/2777): world builder cmake cleanup (proposed by [tjhei](https://github.com/tjhei); merged)

[#2776](https://github.com/geodynamics/aspect/pull/2776): [WIP] Add phase\_function material utilities (proposed by [naliboff](https://github.com/naliboff))

[#2775](https://github.com/geodynamics/aspect/pull/2775): Fix latent\_heat phase transitions loop (proposed by [naliboff](https://github.com/naliboff); merged)

[#2774](https://github.com/geodynamics/aspect/pull/2774): disable FPEs while averaging (proposed by [tjhei](https://github.com/tjhei); merged)

[#2773](https://github.com/geodynamics/aspect/pull/2773): remove a warning (proposed by [tjhei](https://github.com/tjhei); merged)

[#2772](https://github.com/geodynamics/aspect/pull/2772): Output original prm (proposed by [tjhei](https://github.com/tjhei); merged)

[#2770](https://github.com/geodynamics/aspect/pull/2770): udpate world builder to version 0.2.0-pre. (proposed by [MFraters](https://github.com/MFraters); merged)

[#2761](https://github.com/geodynamics/aspect/pull/2761): add assert and notes about inhomogeneous constraints (proposed by [tjhei](https://github.com/tjhei); merged)

[#2498](https://github.com/geodynamics/aspect/pull/2498): Sinker benchmark (proposed by [gassmoeller](https://github.com/gassmoeller); merged)

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

[#2788](https://github.com/geodynamics/aspect/issues/2788) Output dynamic topography on vertices instead of cell-wise averaged (opened)

[#2782](https://github.com/geodynamics/aspect/issues/2782) Worldbuilder causes compile warnings (opened and closed)

[#2779](https://github.com/geodynamics/aspect/issues/2779) check handling or periodic and hanging node constraints (opened)

[#2637](https://github.com/geodynamics/aspect/issues/2637) unstable Q1-DGP0 element? (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!

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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/).
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