# ASPECT Newsletter #81 **URL:** \ **Category:** ASPECT\ **Created:** [June 12, 2019, 11:01am UTC](https://community.geodynamics.org/t/aspect-newsletter-81/667 "2019-06-12T11:01:28Z")\ **Posts on this page:** 1\ **Page:** 1
**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:** [June 12, 2019, 11:01am UTC](https://community.geodynamics.org/t/aspect-newsletter-81/667/1 "2019-06-12T11:01:28Z")
Hello everyone! ``` This is ASPECT newsletter #81. ``` 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: [#3153](https://github.com/geodynamics/aspect/pull/3153): Rayleigh-Taylor Instability Benchmark (proposed by [cedrict](https://github.com/cedrict)) [#3152](https://github.com/geodynamics/aspect/pull/3152): missing files (proposed by [cedrict](https://github.com/cedrict)) [#3150](https://github.com/geodynamics/aspect/pull/3150): Fix matrix and get\_fs\_bi (proposed by [anne-glerum](https://github.com/anne-glerum)) [#3149](https://github.com/geodynamics/aspect/pull/3149): For discussion/comparison: Crust1 using the AsciiDataLayered initial composition plugin (proposed by [bobmyhill](https://github.com/bobmyhill)) [#3148](https://github.com/geodynamics/aspect/pull/3148): New: Layered ASCII data initial composition plugin (proposed by [bobmyhill](https://github.com/bobmyhill)) [#3147](https://github.com/geodynamics/aspect/pull/3147): cookbook for brittle thrust wedges experiments (proposed by [sibiaoliu](https://github.com/sibiaoliu)) [#3146](https://github.com/geodynamics/aspect/pull/3146): sinking block benchmark (proposed by [cedrict](https://github.com/cedrict)) [#3145](https://github.com/geodynamics/aspect/pull/3145): added if !DEAL\_II\_VERSION\_GTE(9,2,0) back into compat.h (proposed by [bobmyhill](https://github.com/bobmyhill); merged) [#3143](https://github.com/geodynamics/aspect/pull/3143): add Wolfgang to the list of authors in the custom spherical shell changes log (proposed by [LudovicJnnt](https://github.com/LudovicJnnt)) [#3142](https://github.com/geodynamics/aspect/pull/3142): Initial isotherm plugin (proposed by [bobmyhill](https://github.com/bobmyhill)) [#3140](https://github.com/geodynamics/aspect/pull/3140): [WIP] fluid pressure boundary conditions (proposed by [jdannberg](https://github.com/jdannberg)) [#3139](https://github.com/geodynamics/aspect/pull/3139): manual: improve SUPG section (proposed by [tjhei](https://github.com/tjhei); merged) [#3138](https://github.com/geodynamics/aspect/pull/3138): manual: fix two mistakes (proposed by [tjhei](https://github.com/tjhei); merged) [#3137](https://github.com/geodynamics/aspect/pull/3137): Updated: Material model that sets a constant viscosity in the lithosphere (proposed by [SophieCoulson](https://github.com/SophieCoulson)) [#3135](https://github.com/geodynamics/aspect/pull/3135): Use semantic mark-up for SI units in the manual. (proposed by [bangerth](https://github.com/bangerth); merged) [#3134](https://github.com/geodynamics/aspect/pull/3134): Use semantic mark-up for SI units in the manual. (proposed by [bangerth](https://github.com/bangerth); merged) [#3133](https://github.com/geodynamics/aspect/pull/3133): [WIP] Benchmark differenciation (proposed by [MarineLasbleis](https://github.com/MarineLasbleis)) [#3132](https://github.com/geodynamics/aspect/pull/3132): manual: spelling check (proposed by [tjhei](https://github.com/tjhei); merged) [#3131](https://github.com/geodynamics/aspect/pull/3131): manual: fix a typo (proposed by [tjhei](https://github.com/tjhei); merged) [#3130](https://github.com/geodynamics/aspect/pull/3130): Finish removing 9.0.0 references from geometry\_model (proposed by [tcclevenger](https://github.com/tcclevenger); merged) [#3129](https://github.com/geodynamics/aspect/pull/3129): additions to the changelog (proposed by [pmbremner](https://github.com/pmbremner); merged) [#3128](https://github.com/geodynamics/aspect/pull/3128): Addition of an unstructured lookup class (proposed by [pmbremner](https://github.com/pmbremner)) [#3127](https://github.com/geodynamics/aspect/pull/3127): document entropy viscosity (proposed by [tjhei](https://github.com/tjhei); merged) [#3126](https://github.com/geodynamics/aspect/pull/3126): Unstructured lookup (proposed by [pmbremner](https://github.com/pmbremner)) [#3125](https://github.com/geodynamics/aspect/pull/3125): Refactor parts of lithosphere\_mask.cc (proposed by [SophieCoulson](https://github.com/SophieCoulson); merged) [#3124](https://github.com/geodynamics/aspect/pull/3124): [WIP] Add an interface and material model for the CRUST 1.0 data set (proposed by [naliboff](https://github.com/naliboff)) [#3123](https://github.com/geodynamics/aspect/pull/3123): add change log for custom spherical shell (proposed by [LudovicJnnt](https://github.com/LudovicJnnt); merged) [#3122](https://github.com/geodynamics/aspect/pull/3122): Remove deal.II version check from sphere geometry model (proposed by [mnkajan](https://github.com/mnkajan); merged) [#3120](https://github.com/geodynamics/aspect/pull/3120): Correction for initial guess/tol in GMRES solve (proposed by [tcclevenger](https://github.com/tcclevenger); merged) [#3119](https://github.com/geodynamics/aspect/pull/3119): prescribed compression [WIP] (proposed by [tjhei](https://github.com/tjhei)) [#3118](https://github.com/geodynamics/aspect/pull/3118): add deviatoric stress postprocessing (proposed by [jvanhunen](https://github.com/jvanhunen)) [#3116](https://github.com/geodynamics/aspect/pull/3116): Fixed the steinberger\_viscosity test (proposed by [mnkajan](https://github.com/mnkajan); merged) [#3115](https://github.com/geodynamics/aspect/pull/3115): update refs in visco plastic m.m. (proposed by [cedrict](https://github.com/cedrict); merged) [#3112](https://github.com/geodynamics/aspect/pull/3112): WIP: Create dc picard solver schemes (proposed by [MFraters](https://github.com/MFraters)) [#3109](https://github.com/geodynamics/aspect/pull/3109): Refactor newton solver scheme. (proposed by [MFraters](https://github.com/MFraters)) [#3108](https://github.com/geodynamics/aspect/pull/3108): manual: document SUPG (proposed by [tjhei](https://github.com/tjhei); merged) [#3107](https://github.com/geodynamics/aspect/pull/3107): move elasticity to rheology model (proposed by [jdannberg](https://github.com/jdannberg)) [#3106](https://github.com/geodynamics/aspect/pull/3106): fix visco plastic get timestep number problem. (proposed by [MFraters](https://github.com/MFraters); merged) [#3105](https://github.com/geodynamics/aspect/pull/3105): Rearrange savani\_perturbation to be the same as s40rts\_perturbation (proposed by [SophieCoulson](https://github.com/SophieCoulson); merged) [#3104](https://github.com/geodynamics/aspect/pull/3104): Implement natural\_to\_cartesian\_coordinates for SphericalShell (proposed by [gassmoeller](https://github.com/gassmoeller); merged) [#3103](https://github.com/geodynamics/aspect/pull/3103): [WIP] Generate and remove particles with uniform box (proposed by [Djneu](https://github.com/Djneu)) [#3102](https://github.com/geodynamics/aspect/pull/3102): WIP: change nonlinear Picard solver to defect correction Picard. (proposed by [MFraters](https://github.com/MFraters)) [#3101](https://github.com/geodynamics/aspect/pull/3101): [WIP] Plugin to use Frank-Kamenetskii rheology (proposed by [GEuen](https://github.com/GEuen)) [#3100](https://github.com/geodynamics/aspect/pull/3100): New: Multicomponent compressible model (proposed by [bobmyhill](https://github.com/bobmyhill); merged) [#3099](https://github.com/geodynamics/aspect/pull/3099): Fix a typo in the manual. (proposed by [bangerth](https://github.com/bangerth); merged) [#3098](https://github.com/geodynamics/aspect/pull/3098): Use a systematic way to print large or small numbers via latex. (proposed by [bangerth](https://github.com/bangerth); merged) [#3097](https://github.com/geodynamics/aspect/pull/3097): Custom spherical shell (proposed by [LudovicJnnt](https://github.com/LudovicJnnt); merged) [#3096](https://github.com/geodynamics/aspect/pull/3096): Initial temperature model based on anelastic Vs-T conversion (proposed by [freddrichards](https://github.com/freddrichards)) [#3095](https://github.com/geodynamics/aspect/pull/3095): Reorder changelog entries according to naming scheme (proposed by [gassmoeller](https://github.com/gassmoeller); merged) [#3094](https://github.com/geodynamics/aspect/pull/3094): Avoid using scientific notation for numbers in the manual. (proposed by [bangerth](https://github.com/bangerth); merged) [#3093](https://github.com/geodynamics/aspect/pull/3093): More latex markup. (proposed by [bangerth](https://github.com/bangerth); merged) [#3092](https://github.com/geodynamics/aspect/pull/3092): AsciiDataLookup improvements (proposed by [tjhei](https://github.com/tjhei); merged) [#3091](https://github.com/geodynamics/aspect/pull/3091): use VectorTools::compute\_global\_error (proposed by [tjhei](https://github.com/tjhei); merged) [#3090](https://github.com/geodynamics/aspect/pull/3090): manual: improve cmake plugin help (proposed by [tjhei](https://github.com/tjhei); merged) [#3089](https://github.com/geodynamics/aspect/pull/3089): Material model that sets a constant viscosity in the lithopshere (proposed by [SophieCoulson](https://github.com/SophieCoulson)) [#3088](https://github.com/geodynamics/aspect/pull/3088): Python contrib (proposed by [MarineLasbleis](https://github.com/MarineLasbleis)) [#3087](https://github.com/geodynamics/aspect/pull/3087): Add get\_model\_operator\_options function in utilities so operator options don’t get out of sync (proposed by [SophieCoulson](https://github.com/SophieCoulson); merged) [#3086](https://github.com/geodynamics/aspect/pull/3086): make manual compile (proposed by [tjhei](https://github.com/tjhei); merged) [#3085](https://github.com/geodynamics/aspect/pull/3085): update parameters (proposed by [tjhei](https://github.com/tjhei); merged) [#3084](https://github.com/geodynamics/aspect/pull/3084): move and cleanup geomio.prm (proposed by [tjhei](https://github.com/tjhei); merged) [#3083](https://github.com/geodynamics/aspect/pull/3083): Better document a shell function. (proposed by [bangerth](https://github.com/bangerth); merged) [#3082](https://github.com/geodynamics/aspect/pull/3082): Fix test files without newline at the end of the file. (proposed by [freddrichards](https://github.com/freddrichards); merged) [#3081](https://github.com/geodynamics/aspect/pull/3081): Use a clearer way to check whether everything has been initialized. (proposed by [bangerth](https://github.com/bangerth); merged) [#3080](https://github.com/geodynamics/aspect/pull/3080): [www] remove references to mendeley [WIP] (proposed by [tjhei](https://github.com/tjhei); merged) [#3079](https://github.com/geodynamics/aspect/pull/3079): remove old deal.II compatibility in compat.h (proposed by [tjhei](https://github.com/tjhei); merged) [#3078](https://github.com/geodynamics/aspect/pull/3078): benchmarks/check.sh: skip original.prm (proposed by [tjhei](https://github.com/tjhei); merged) [#3077](https://github.com/geodynamics/aspect/pull/3077): new groovy benchmark (proposed by [cedrict](https://github.com/cedrict); merged) [#3075](https://github.com/geodynamics/aspect/pull/3075): Multicomponent equation of state (proposed by [jdannberg](https://github.com/jdannberg); merged) [#3074](https://github.com/geodynamics/aspect/pull/3074): Parameter view: + / - (proposed by [tjhei](https://github.com/tjhei); merged) [#3073](https://github.com/geodynamics/aspect/pull/3073): parameter view: implement filtering (proposed by [tjhei](https://github.com/tjhei); merged) [#3072](https://github.com/geodynamics/aspect/pull/3072): equation of state in drucker prager (proposed by [jdannberg](https://github.com/jdannberg); merged) [#3071](https://github.com/geodynamics/aspect/pull/3071): WIP: Add visualization postprocessor for the maximum shear stress (proposed by [MFraters](https://github.com/MFraters)) [#3070](https://github.com/geodynamics/aspect/pull/3070): Fix test result (proposed by [gassmoeller](https://github.com/gassmoeller)) [#3069](https://github.com/geodynamics/aspect/pull/3069): use natural\_coordinates in boundary get\_data\_component (proposed by [bobmyhill](https://github.com/bobmyhill); merged) [#3068](https://github.com/geodynamics/aspect/pull/3068): slab detachment benchmark (proposed by [cedrict](https://github.com/cedrict); merged) [#3067](https://github.com/geodynamics/aspect/pull/3067): fix melt global model for zero temperature (proposed by [jdannberg](https://github.com/jdannberg); merged) [#3066](https://github.com/geodynamics/aspect/pull/3066): Anisotropy cookbook (proposed by [KiralyAgi](https://github.com/KiralyAgi); merged) [#3064](https://github.com/geodynamics/aspect/pull/3064): The bibtex generated by Mendeley incorrectly categorizes several mast… (proposed by [ljhwang](https://github.com/ljhwang); merged) [#3063](https://github.com/geodynamics/aspect/pull/3063): re-indent Jenkinsfile (proposed by [tjhei](https://github.com/tjhei); merged) [#3062](https://github.com/geodynamics/aspect/pull/3062): Use the \degree symbol for degrees in the parameter descriptions. (proposed by [bangerth](https://github.com/bangerth); merged) [#3061](https://github.com/geodynamics/aspect/pull/3061): Use the \degree symbol for degrees in the manual. (proposed by [bangerth](https://github.com/bangerth); merged) [#3060](https://github.com/geodynamics/aspect/pull/3060): indent: fix tab replace on OSX (proposed by [tjhei](https://github.com/tjhei); merged) [#3059](https://github.com/geodynamics/aspect/pull/3059): cleanup: introduce a new variable (proposed by [tjhei](https://github.com/tjhei); merged) [#3058](https://github.com/geodynamics/aspect/pull/3058): Free surface tractions (proposed by [fionaclerc](https://github.com/fionaclerc)) [#3050](https://github.com/geodynamics/aspect/pull/3050): /benchmark/ fixes (proposed by [tjhei](https://github.com/tjhei); merged) [#3048](https://github.com/geodynamics/aspect/pull/3048): Added missing grid interpolator (proposed by [bobmyhill](https://github.com/bobmyhill); merged) [#3047](https://github.com/geodynamics/aspect/pull/3047): Fix: avoid MPI deadlock in constraints (proposed by [tjhei](https://github.com/tjhei); merged) [#3043](https://github.com/geodynamics/aspect/pull/3043): New benchmark for translation of brittle thrust wedge (proposed by [chronictectonic](https://github.com/chronictectonic); merged) [#3042](https://github.com/geodynamics/aspect/pull/3042): Benchmark for brittle thrust wedge experiments in Buiter et al., 2016,JSG paper (proposed by [sibiaoliu](https://github.com/sibiaoliu); merged) [#3040](https://github.com/geodynamics/aspect/pull/3040): Further refactor the viz postprocessor. (proposed by [bangerth](https://github.com/bangerth); merged) [#3036](https://github.com/geodynamics/aspect/pull/3036): Equation of state model (proposed by [jdannberg](https://github.com/jdannberg); merged) [#3026](https://github.com/geodynamics/aspect/pull/3026): Added benchmark of anelastic Vs to temperature conversion (proposed by [freddrichards](https://github.com/freddrichards); merged) [#3013](https://github.com/geodynamics/aspect/pull/3013): Allow particles to be applied to fields when particles aren’t distributed throughout model. (proposed by [Djneu](https://github.com/Djneu); merged) [#3007](https://github.com/geodynamics/aspect/pull/3007): Initial Temperature Plug-in - Lithosphere mask (proposed by [SophieCoulson](https://github.com/SophieCoulson); merged) [#2999](https://github.com/geodynamics/aspect/pull/2999): Advection benchmark in 2d annulus (proposed by [GEuen](https://github.com/GEuen); merged) [#2971](https://github.com/geodynamics/aspect/pull/2971): Add a new shear benchmark for instantaneous and time-dependent flow (proposed by [gassmoeller](https://github.com/gassmoeller); merged) [#2970](https://github.com/geodynamics/aspect/pull/2970): New: Realistic compressible equation of state (Modified Tait) (proposed by [bobmyhill](https://github.com/bobmyhill); merged) [#2968](https://github.com/geodynamics/aspect/pull/2968): Replace if valid operator for initial temperature conditions (proposed by [SophieCoulson](https://github.com/SophieCoulson); merged) And this is a list of recently opened or closed discussions: [#3151](https://github.com/geodynamics/aspect/issues/3151) Bug: WGS84 hardwired into initial\_temperature/adiabatic\_boundary plugin (opened) [#3144](https://github.com/geodynamics/aspect/issues/3144) Add missing #DEAL\_II\_VERSION\_GTE (opened and closed) [#3141](https://github.com/geodynamics/aspect/issues/3141) refinement fraction=1 should do global refinement (opened) [#3136](https://github.com/geodynamics/aspect/issues/3136) Finish sandbox example (opened) [#3121](https://github.com/geodynamics/aspect/issues/3121) future SUPG-related items (opened) [#3117](https://github.com/geodynamics/aspect/issues/3117) Make Utilities::InitialData…::get\_data\_component functions consistent (opened) [#3114](https://github.com/geodynamics/aspect/issues/3114) Simplify code in the anisotropic cookbook (opened) [#3113](https://github.com/geodynamics/aspect/issues/3113) Write a brittle thrust wedge cookbook based on the Buiter et al. 2016 benchmarks (opened) [#3111](https://github.com/geodynamics/aspect/issues/3111) Solving linear system that exists only on the boundary on volume for the free surface (opened and closed) [#3110](https://github.com/geodynamics/aspect/issues/3110) Solving linear system that exists only on the boundary on volume for the free surface (opened) [#3076](https://github.com/geodynamics/aspect/issues/3076) tosi: Tosi\_Case4.prm SIGFPE error (opened) [#3065](https://github.com/geodynamics/aspect/issues/3065) Change Workflow to update /publications.html from Mendeley to direct edit of citing\_aspect.bib (opened) [#3003](https://github.com/geodynamics/aspect/issues/3003) Update muparser cookbook (closed) [#3001](https://github.com/geodynamics/aspect/issues/3001) Ellipsoidal chunk pull function is not the inverse of push function (closed) [#1039](https://github.com/geodynamics/aspect/issues/1039) Add a general section about stabilization to the manual (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/). ```