ENH: porousExplicitSourceReactingParcelFoam/filter: emissivity as field

tutorials/lagrangian/porousExplicitSourceReactingParcelFoam/filter/0.org/G

@@ -26,7 +26,7 @@ boundaryField
         type            MarshakRadiation;
         T               T;
         emissivityMode  lookup;
-        emissivity      1;
+        emissivity      uniform 1;
         value           uniform 0;
         refValue        uniform 0;
         refGradient     uniform 0;
@@ -37,7 +37,7 @@ boundaryField
         type            MarshakRadiation;
         T               T;
         emissivityMode  lookup;
-        emissivity      1;
+        emissivity      uniform 1;
         value           uniform 0;
         refValue        uniform 0;
         refGradient     uniform 0;