ASPECT Newsletter #99

Hello everyone!

       This is ASPECT newsletter #99.

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:

#3428: Create documentation subdirectories and adjust paths in manual (proposed by gassmoeller)
#3427: avoid deal.II deprecation of n_array_elements (proposed by tjhei)
#3426: Prescribed plastic dilation (proposed by tjhei)
#3425: Add VOF Van Keken benchmark section (proposed by class4kayaker)
#3424: Remove a duplicate citation. (proposed by bangerth; merged)
#3422: Move convection-box manual files into cookbooks directory (proposed by gassmoeller)
#3421: Fix capitalization of Aspect -> ASPECT (proposed by gassmoeller; merged)
#3420: Add average- minimun- and maximum gravity/potential in Gravity Postprocessor (proposed by LudovicJnnt)
#3419: [WIP] Fix chunk manifold (proposed by gassmoeller)
#3417: libdap related cleanup (proposed by tjhei; merged)
#3416: Output degrees instead of radians (proposed by anne-glerum; merged)
#3415: enumerate all switch cases (proposed by tjhei; merged)
#3414: Unify screen output of fluid velocity with other systems (proposed by gassmoeller; merged)
#3413: Reuse system matrix for melt solver (proposed by gassmoeller; merged)
#3412: use switch for solver-type check (proposed by tjhei; merged)
#3411: Improve preconditioner coupling and assembly (proposed by gassmoeller; merged)
#3410: S40RTS/SAVANI: avoid data copies and cleanup (proposed by tjhei; merged)
#3409: Jenkins: ignore coveralls failure (proposed by tjhei; merged)
#3408: Rename sampling scheme in gravity_point_values postprocessor (proposed by LudovicJnnt; merged)
#3407: [WIP] Diffusion of surface boundary topography (proposed by anne-glerum)
#3406: update chebyshev parameters (proposed by tcclevenger; merged)
#3405: Ability to interpolate multiple properties (proposed by sac-bsa; merged)
#3404: Improve allocation of matrix blocks (proposed by gassmoeller; merged)
#3334: Url reader (proposed by kneumiller; merged)
#3273: Use phase functions for EoS in visco_plastic material model (proposed by gassmoeller; merged)

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

#3423 Missing publications on the website (opened and closed)
#3418 libdap example is broken (opened)
#3371 Issues with 2D bilinear least squares particle interpolation (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](