From 6e716c66d52cb0206ad3846723adba0e0a478f5d Mon Sep 17 00:00:00 2001
From: Andrew Heather <>
Date: Fri, 24 Apr 2020 12:06:38 +0100
Subject: [PATCH] ENH: pimpleFoam - ddtCorr now optional

---
 .../solvers/incompressible/pimpleFoam/pEqn.H         | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/applications/solvers/incompressible/pimpleFoam/pEqn.H b/applications/solvers/incompressible/pimpleFoam/pEqn.H
index e3c61fe37d..8f49f63599 100644
--- a/applications/solvers/incompressible/pimpleFoam/pEqn.H
+++ b/applications/solvers/incompressible/pimpleFoam/pEqn.H
@@ -1,11 +1,11 @@
 volScalarField rAU(1.0/UEqn.A());
 volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p));
-surfaceScalarField phiHbyA
-(
-    "phiHbyA",
-    fvc::flux(HbyA)
-  + MRF.zeroFilter(fvc::interpolate(rAU)*fvc::ddtCorr(U, phi, Uf))
-);
+surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
+
+if (pimple.ddtCorr())
+{
+    phiHbyA += MRF.zeroFilter(fvc::interpolate(rAU)*fvc::ddtCorr(U, phi, Uf));
+}
 
 MRF.makeRelative(phiHbyA);