[tpfa][fix] Check for intersection.neighbor

Closes #681

See merge request !1578

On process boundaries both i.boundary() and i.neighbor()
return false. In that case we don't have a neighbor!

[Linear] Added a check to see if added entries are non-zero

Closes #598

See merge request !1292

Ned Coltman authored 6 years ago and Timo Koch committed 5 years ago

Per default nothing is omitted. When a positive non-zero threshold is set,
all matrix entries below that threshold will be removed from the
pattern.

[test][2p2cnonequil] Fix parameter names to comply with naming conventions

See merge request !1574

[fix][nonequilibrium][tests] fix gradient calculation in nonequilibrium

See merge request !1571

Katharina Heck authored 5 years ago and Timo Koch committed 5 years ago

This fixes a bug introduced with !1517 and thus fixes the
test_mpnc_kinetic test. However the newly introduced 2p2c test
references were created with the buggy code and thus have to updated (in
this patch). We make it more robust by increasing the Newton accuracy,
introducing checkpoints and incresing the initial time step size, which
results in many less time steps.

Feature/move gravity to spatialparams

Closes #696

See merge request !1573

Feature: Implement a shallow water model

Closes #671

See merge request !1525

Leopold Stadler authored 6 years ago and Timo Koch committed 5 years ago

Diffusion is actually not implemented for the shallow water model.