flowRateInletVelocity, flowRateOutletVelocity BCs: Updated docs

src/finiteVolume/fields/fvPatchFields/derived/flowRateInletVelocity/flowRateInletVelocityFvPatchVectorField.H

@@ -47,6 +47,7 @@ Usage
         Property     | Description             | Required    | Default value
         massFlowRate | mass flow rate [kg/s]   | no          |
         volumetricFlowRate | volumetric flow rate [m3/s]| no |
+        rho          | density field name      | no          | rho
         rhoInlet     | inlet density           | no          |
         extrapolateProfile | Extrapolate velocity profile | no | false
     \endtable

src/finiteVolume/fields/fvPatchFields/derived/flowRateOutletVelocity/flowRateOutletVelocityFvPatchVectorField.C

@@ -148,7 +148,7 @@ void Foam::flowRateOutletVelocityFvPatchVectorField::updateValues
 {
     const scalar t = db().time().timeOutputValue();
 
-    const vectorField n = patch().nf();
+    const vectorField n(patch().nf());
 
     // Extrapolate patch velocity
     vectorField Up(this->patchInternalField());

src/finiteVolume/fields/fvPatchFields/derived/flowRateOutletVelocity/flowRateOutletVelocityFvPatchVectorField.H

@@ -46,7 +46,8 @@ Usage
         Property     | Description             | Required    | Default value
         massFlowRate | mass flow rate [kg/s]   | no          |
         volumetricFlowRate | volumetric flow rate [m^3/s]| no |
-        rhoOutlet     | outlet density           | no          |
+        rho          | density field name      | no          | rho
+        rhoOutlet    | outlet density          | no          |
     \endtable
 
     Example of the boundary condition specification for a volumetric flow rate: