PETSc version 3.17.4
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DMTSCreateRHSMassMatrixLumped

This creates the lumped mass matrix associated with the given DM, and a solver to invert it, and stores them in the DMTS context.

Synopsis

#include "petscts.h" 
PetscErrorCode DMTSCreateRHSMassMatrixLumped(DM dm)
Collective on dm

Input Parameters

dm - DM providing the mass matrix

Note: The idea here is that an explicit system can be given a mass matrix, based on the DM, which is inverted on the RHS at each step. Since the matrix is lumped, inversion is trivial.

See Also

DMTSCreateRHSMassMatrix(), DMTSDestroyRHSMassMatrix(), DMCreateMassMatrix(), DMTS

Level

developer

Location

src/ts/utils/dmlocalts.c

Examples

src/ts/tutorials/ex45.c.html

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