Set guard cells for allocation using field solver stencil and particle shape factor (#1969)

1 files changed, 8 insertions, 0 deletions

diff --git a/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CartesianNodalAlgorithm.H b/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CartesianNodalAlgorithm.H
index 5bd7e88bc..68ecdfc60 100644
--- a/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CartesianNodalAlgorithm.H
+++ b/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CartesianNodalAlgorithm.H
@@ -56,6 +56,14 @@ struct CartesianNodalAlgorithm {
     }
 
     /**
+     * \brief Returns maximum number of guard cells required by the field-solve
+     */
+    static amrex::IntVect GetMaxGuardCell () {
+        // The nodal solver requires one guard cell in each dimension
+        return (amrex::IntVect(AMREX_D_DECL(1,1,1)));
+    }
+
+    /**
      * Perform derivative along x
      * (For a solver on a staggered grid, `UpwardDx` and `DownwardDx` take into
      * account the staggering; but for `CartesianNodalAlgorithm`, they are equivalent) */