From b9711e593b96c939ffae52b208b01f8aae73ee90 Mon Sep 17 00:00:00 2001
From: Will Bainbridge <http://cfd.direct>
Date: Fri, 3 Mar 2023 10:24:28 +0000
Subject: [PATCH] fluxLimitedLangmuirHinshelwoodReactionRate: Prevent lookup of
 Av field for uniform Av

---
 .../fluxLimitedLangmuirHinshelwoodReactionRateI.H      | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/thermophysicalModels/specie/reaction/reactionRate/fluxLimitedLangmuirHinshelwoodReactionRate/fluxLimitedLangmuirHinshelwoodReactionRateI.H b/src/thermophysicalModels/specie/reaction/reactionRate/fluxLimitedLangmuirHinshelwoodReactionRate/fluxLimitedLangmuirHinshelwoodReactionRateI.H
index 49476711d3..1d5625f2d9 100644
--- a/src/thermophysicalModels/specie/reaction/reactionRate/fluxLimitedLangmuirHinshelwoodReactionRate/fluxLimitedLangmuirHinshelwoodReactionRateI.H
+++ b/src/thermophysicalModels/specie/reaction/reactionRate/fluxLimitedLangmuirHinshelwoodReactionRate/fluxLimitedLangmuirHinshelwoodReactionRateI.H
@@ -198,14 +198,20 @@ fluxLimitedLangmuirHinshelwoodReactionRate
 inline void
 Foam::fluxLimitedLangmuirHinshelwoodReactionRate::preEvaluate() const
 {
-    tAv_ = ob_.lookupObject<volScalarField::Internal>(AvName_);
+    if (!AvUniform_)
+    {
+        tAv_ = ob_.lookupObject<volScalarField::Internal>(AvName_);
+    }
 }
 
 
 inline void
 Foam::fluxLimitedLangmuirHinshelwoodReactionRate::postEvaluate() const
 {
-    tAv_ = tmp<volScalarField::Internal>(nullptr);
+    if (!AvUniform_)
+    {
+        tAv_ = tmp<volScalarField::Internal>(nullptr);
+    }
 }