From 8df363cf97826b03f2923c9b0bf91a378853bb7c Mon Sep 17 00:00:00 2001
From: danielque <daniel.queteschiner@jku.at>
Date: Thu, 24 Aug 2017 17:06:23 +0200
Subject: [PATCH] add some mathematical constants

cf. OpenFOAM mathematicalConstants.H
---
 .../cfdemParticle/cfdTools/mathExtra.H        | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/lagrangian/cfdemParticle/cfdTools/mathExtra.H b/src/lagrangian/cfdemParticle/cfdTools/mathExtra.H
index fb45ecfd..a48893ef 100644
--- a/src/lagrangian/cfdemParticle/cfdTools/mathExtra.H
+++ b/src/lagrangian/cfdemParticle/cfdTools/mathExtra.H
@@ -44,6 +44,28 @@ Description
 
 #define TOLERANCE_ORTHO 1e-10
 
+namespace Foam
+{
+namespace constant
+{
+namespace mathematical
+{
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+    const scalar piByFour(0.25*pi);
+    const scalar fourPiByThree(4.0*pi/3.0);
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace mathematical
+} // End namespace constant
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+
 namespace MathExtra 
 {