Adds a new feature for the GMG preconditioners of the matrix-free application. It allows to use FE_Q_iso_Q1 elements for the coarsest level if the new parameter set mg coarse grid use fe q iso q1 = true. This might be useful for certain problems when high order elements are used.
How Has This Been Tested?
The flow around a sphere case was tested and everything seems to work as it should. We will test it more in the following weeks with different benchmarks.
Documentation
The new parameter was added to the description of the MG linear solver parameters.
Description
Adds a new feature for the GMG preconditioners of the matrix-free application. It allows to use FE_Q_iso_Q1 elements for the coarsest level if the new parameter
set mg coarse grid use fe q iso q1 = true. This might be useful for certain problems when high order elements are used.How Has This Been Tested?
The flow around a sphere case was tested and everything seems to work as it should. We will test it more in the following weeks with different benchmarks.
Documentation