[aspect-devel] ASPECT Newsletter #50

[Rene Gassmoeller]

Hello everyone!

This is ASPECT newsletter #50.
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:

#2125: Only rebuild Stokes preconditioner if necessary (proposed by gassmoeller) https://github.com/geodynamics/aspect/pull/2125

#2124: Update documentation of viscous prefactors in visco_plastic (proposed by naliboff; merged) https://github.com/geodynamics/aspect/pull/2124

#2122: [WIP] World builder structure (proposed by MFraters) https://github.com/geodynamics/aspect/pull/2122

#2120: manual fixes, update parameters and plugin graph (proposed by tjhei; merged) https://github.com/geodynamics/aspect/pull/2120

#2119: Bring SPD safety factor in line with the one actually used in the computation. (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2119

#2116: Clean up and document Newton Stokes preconditioner. (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2116

#2115: Add spiegelman material model to benchmark section. (proposed by MFraters) https://github.com/geodynamics/aspect/pull/2115

#2114: Add no deviator tests for simple nonlinear (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2114

#2113: Fix a LaTeX markup problem. (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2113

#2112: allow simple nonlinear material model without the deviator (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2112

#2108: add the Eisenstat Walker method to the defect correction Picard iteration. (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2108

#2107: only ask for the derivatives when actually needed. (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2107

#2106: Fix operator splitting with latent heat (proposed by jdannberg; merged) https://github.com/geodynamics/aspect/pull/2106

#2105: Remove model settings subsection (proposed by gassmoeller) https://github.com/geodynamics/aspect/pull/2105

#2104: fix time step size for zero velocity (proposed by jdannberg; merged) https://github.com/geodynamics/aspect/pull/2104

#2103: fix visco-plastic derivative (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2103

#2102: Clean up a few lines of code for readability. (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2102

#2101: avoid clang warning (proposed by tjhei; merged) https://github.com/geodynamics/aspect/pull/2101

#2100: Fix some small Newton related problems (proposed by MFraters) https://github.com/geodynamics/aspect/pull/2100

#2099: Allow different boundary composition plugins on different boundaries (proposed by gassmoeller) https://github.com/geodynamics/aspect/pull/2099

#2098: Remove unused variable (proposed by tjhei; merged) https://github.com/geodynamics/aspect/pull/2098

#2097: Remove getters/setters for the Newton parameters (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2097

#2096: Break the runtime parameters out of the NewtonHandler class. (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2096

#2095: Document two functions. (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2095

#2094: Let solve_stokes() return something more uniform. (proposed by bangerth; merged) https://github.com/geodynamics/aspect/pull/2094

#2030: Add derivatives to visco plastic material model (proposed by MFraters; merged) https://github.com/geodynamics/aspect/pull/2030

#616: checkpointing test for iterative solver (proposed by tjhei; merged) https://github.com/geodynamics/aspect/pull/616


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

#2123: Diffusion Formulation Bug in Visco plastic material model (opened) https://github.com/geodynamics/aspect/issues/2123

#2121: Unify compute_volume_fractions() implementation (opened) https://github.com/geodynamics/aspect/issues/2121

#2118: Add missing derivative term to the Newton preconditioner matrix (opened) https://github.com/geodynamics/aspect/issues/2118

#2117: Improve documentation in newton.h (opened) https://github.com/geodynamics/aspect/issues/2117

#2111: deal.ii deprection warnings in ASPECT (opened) https://github.com/geodynamics/aspect/issues/2111

#2110: List of future cookbooks (opened) https://github.com/geodynamics/aspect/issues/2110

#2109: Add instructions/a template for new cookbooks (opened) https://github.com/geodynamics/aspect/issues/2109

#2093: Fix unclear comment in mesh refinement criteria (opened) https://github.com/geodynamics/aspect/issues/2093

#2083: Move Newton parameters into a separate struct (closed) https://github.com/geodynamics/aspect/issues/2083

#2082: Let solve_stokes() return a pair of values (closed) https://github.com/geodynamics/aspect/issues/2082


A list of all major changes since the last release can be found at 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 writing to aspect-devel at geodynamics.org, or by opening issues or pull requests at https://www.github.com/geodynamics/aspect.
Additional information can be found at https://aspect.geodynamics.org/, and https://geodynamics.org/cig/software/aspect/.
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