FVScalarLagrangeMultiplierConstraint

This object is a base class for implementing variable value constraints using Lagrange multipliers.

The detailed description of the derivation for the corresponding finite element constraint can be found at scalar_constraint_kernel. The finite volume version can be obtained by simply substituting $var element = document.getElementById("moose-equation-bd21230c-01ab-4a03-b545-53a5fba40718");katex.render("1", element, {displayMode:false,throwOnError:false});$ for $var element = document.getElementById("moose-equation-c92a3e6b-fda0-4386-adb3-c9d54cab34d2");katex.render("\\varphi", element, {displayMode:false,throwOnError:false});$ .

warning

The contribution to the diagonal of the system of this kernel is null, which introduces a saddle point. Make sure to use a NONZERO shift in your preconditioner.