Update examples/tree_1d_dgsem/elixir_shallowwater_quasi1d_well_balanc…

…ed.jl Co-authored-by: Jesse Chan <[email protected]>
trixi-framework · Sep 8, 2023 · cc4c50b · cc4c50b
1 parent ef6503c
commit cc4c50b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/examples/tree_1d_dgsem/elixir_shallowwater_quasi1d_well_balanced.jl b/examples/tree_1d_dgsem/elixir_shallowwater_quasi1d_well_balanced.jl
@@ -18,6 +18,9 @@ function initial_condition_discontinuous_well_balancedness(x, t,
                                                            equations::ShallowWaterEquationsQuasi1D)
     H = equations.H0
     v = 0.0
+
+    # for a periodic domain, this choice of `b` and `a` mimic 
+    # discontinuity across the periodic boundary.
     b = 0.5 * (x[1] + 1)
     a = 2 + x[1]