From 2a6601e1ca67d6019f20bc5f32260a734b796198 Mon Sep 17 00:00:00 2001
From: Henry Weller <http://cfd.direct>
Date: Tue, 27 Jun 2017 21:45:53 +0100
Subject: [PATCH] surfaceFilmModels::transferModels: Now defaults to a null
 list for backward-compatibility

---
 .../transferModels/transferModelList/transferModelList.C   | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/regionModels/surfaceFilmModels/submodels/kinematic/transferModels/transferModelList/transferModelList.C b/src/regionModels/surfaceFilmModels/submodels/kinematic/transferModels/transferModelList/transferModelList.C
index 1bef3d5c5..1ef39ccdc 100644
--- a/src/regionModels/surfaceFilmModels/submodels/kinematic/transferModels/transferModelList/transferModelList.C
+++ b/src/regionModels/surfaceFilmModels/submodels/kinematic/transferModels/transferModelList/transferModelList.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -60,7 +60,10 @@ transferModelList::transferModelList
     ),
     massTransferred_(film.intCoupledPatchIDs().size(), 0.0)
 {
-    const wordList activeModels(dict.lookup("transferModels"));
+    const wordList activeModels
+    (
+        dict.lookupOrDefault("transferModels", wordList::null())
+    );
 
     wordHashSet models;
     forAll(activeModels, i)