ENH: Added Weber numbver evaluation

src/lagrangian/intermediate/parcels/Templates/KinematicParcel/KinematicParcel.H

@@ -547,6 +547,15 @@ public:
                 const scalar muc        // carrier dynamic viscosity
             ) const;
 
+            //- Weber number
+            inline scalar We
+            (
+                const vector& U,        // particle velocity
+                const scalar d,         // particle diameter
+                const scalar rhoc,      // carrier density
+                const scalar sigma      // particle surface tension
+            ) const;
+
 
         // Main calculation loop
 

src/lagrangian/intermediate/parcels/Templates/KinematicParcel/KinematicParcelI.H

@@ -542,4 +542,17 @@ inline Foam::scalar Foam::KinematicParcel<ParcelType>::Re
 }
 
 
+template<class ParcelType>
+inline Foam::scalar Foam::KinematicParcel<ParcelType>::We
+(
+    const vector& U,
+    const scalar d,
+    const scalar rhoc,
+    const scalar sigma
+) const
+{
+    return rhoc*magSqr(U - Uc_)*d/(sigma + ROOTVSMALL);
+}
+
+
 // ************************************************************************* //