diff --git a/src/OpenFOAM/dimensionSet/dimensionSets.C b/src/OpenFOAM/dimensionSet/dimensionSets.C
index fda94834748b8afc599276683cb45815d944a07f..e7e32267df656247995c83fa36e4515c7b8c549b 100644
--- a/src/OpenFOAM/dimensionSet/dimensionSets.C
+++ b/src/OpenFOAM/dimensionSet/dimensionSets.C
@@ -46,6 +46,7 @@ const Foam::dimensionSet Foam::dimDensity(1, -3, 0, 0, 0, 0, 0);
 const Foam::dimensionSet Foam::dimForce(1, 1, -2, 0, 0, 0, 0);
 
 const Foam::dimensionSet Foam::dimVelocity(0, 1, -1, 0, 0, 0, 0);
+const Foam::dimensionSet Foam::dimAcceleration(0, 1, -2, 0, 0, 0, 0);
 const Foam::dimensionSet Foam::dimPressure(1, -1, -2, 0, 0, 0, 0);
 const Foam::dimensionSet Foam::dimGasConstant(0, 2, -2, -1, 0, 0, 0);
 const Foam::dimensionSet Foam::dimSpecificHeatCapacity(0, 2, -2, -1, 0, 0, 0);
diff --git a/src/OpenFOAM/dimensionSet/dimensionSets.H b/src/OpenFOAM/dimensionSet/dimensionSets.H
index 504aa83916d6a4e7221fe255ad8921169b0bb708..0486de6d505eb7594fd13d31e343eb216c5425a0 100644
--- a/src/OpenFOAM/dimensionSet/dimensionSets.H
+++ b/src/OpenFOAM/dimensionSet/dimensionSets.H
@@ -62,6 +62,7 @@ extern const dimensionSet dimDensity;
 extern const dimensionSet dimForce;
 
 extern const dimensionSet dimVelocity;
+extern const dimensionSet dimAcceleration;
 extern const dimensionSet dimPressure;
 extern const dimensionSet dimGasConstant;
 extern const dimensionSet dimSpecificHeatCapacity;