Thetis meeting agenda 2020 07 24

Date/time of meeting 2020-07-24 13:00 UTC (14:00 BST)

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Agenda

GEM special issue on ocean modeling (Tuomas)

See call for papers. Could be an opportunity to publish a review paper on Thetis adjiont.

RT variant changes (Stephan)

2D sediment model PR (Mariana)

Horizontal velocity in extruded HDiv spaces (Tuomas)

In 3D, horizontal velocity lives in spaces like HDiv(RT2 x DG1). This defines a horizontal vector space iff bathymetry is constant. On a deformed mesh, the vector space follows the layers, i.e. is not strictly horizontal. To get a strictly horizontal space, we need to augment U with suitable vertical vector space. This adds more DOFs to the problem (up to 1.5x) which makes 3D HDiv solver (even more) slow. Is it possible to define a strictly horizontal HDiv velocity space on deformed mesh?