From 084bd015f13611a99084352ee94566931f547eea Mon Sep 17 00:00:00 2001
From: Henry Weller <http://cfd.direct>
Date: Thu, 5 Oct 2023 12:37:41 +0100
Subject: [PATCH] modules::shockFluid: Clear temporary fluxed if NCC interfaces
 are updated

Resolves bug-report https://bugs.openfoam.org/view.php?id=4020
---
 applications/modules/shockFluid/shockFluid.C | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/applications/modules/shockFluid/shockFluid.C b/applications/modules/shockFluid/shockFluid.C
index e34996cecd..4770fa6d5f 100644
--- a/applications/modules/shockFluid/shockFluid.C
+++ b/applications/modules/shockFluid/shockFluid.C
@@ -24,6 +24,7 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "shockFluid.H"
+#include "fvMeshStitcher.H"
 #include "localEulerDdtScheme.H"
 #include "hydrostaticInitialisation.H"
 #include "fvcMeshPhi.H"
@@ -255,7 +256,7 @@ void Foam::solvers::shockFluid::preSolve()
 
     fvModels().preUpdateMesh();
 
-    if (mesh.topoChanging())
+    if (mesh.topoChanging() || mesh.stitcher().stitches())
     {
         pos.clear();
         neg.clear();