ASPECT Newsletter #138

Hello everyone!

This is ASPECT newsletter #138.
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:

#4389: A postprocessor that determines Mobility of the lithosphere following Lourenco et al., 2020 G3 (implemented by elodie-kendall)
#4385: change spherical velocity components to m/yr from m/s if required (implemented by elodie-kendall)
#4384: remove nullspace for cookbooks/S20RTS.prm (implemented by zjiaqi2018; reviewed by gassmoeller)
#4381: remove duplicated code in mesh deformation (implemented by tjhei)
#4379: higher order mesh deformation [WIP] (implemented by tjhei)
#4377: add failing 9.3 test (implemented by tjhei; reviewed by gassmoeller)
#4373: Print solver history on failure if only cheap Stokes solver is used (implemented by gassmoeller; reviewed by tjhei)
#4369: A postprocessor that outputs the second invariant of the deviatoric stress tensor (implemented by anne-glerum; reviewed by gassmoeller)
#4360: Evaluate compositions more efficiently for particles (implemented by gassmoeller; reviewed by tjhei)
#3504: Allow disable EV for compositions at boundaries (implemented by gassmoeller; reviewed by jdannberg)
#3497: Added stabilization interface for advection assemblers (implemented by gassmoeller; reviewed by gassmoeller)

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

#4388 Can one use the Newton solver with compositing material model? (opened)
#4387 Option to prescribe spherical normal and tangential velocties individually (opened)
#4386 How to randomize initial temperature (opened)
#4383 Rename master branch to main (opened)
#4382 Temperature boudnary condition: missing Fixed temperature boundary indicators (opened and closed)
#4380 Known Issues (opened)
#4356 Compositions on particles incorrect when enabling free surface (closed)
#4349 Restart fails for large problems and deal.II 9.3.0 (closed)
#4205 newton_solver_benchmark_set issues (closed)
#4168 Outputting correct “total wall time” in log file after restart (closed)
#2803 particle changes [post switch to deal.ii 9.0] (closed)

A list of all major changes since the last release can be found at this website.

Thanks for being part of the community!

Let us know about questions, problems, bugs or just share your experience by visting our forum, or by opening issues or pull requests on Github.
Additional information can be found at our official website, and CIG’s ASPECT website.