FIx the balance issue for gz

dietmarw · dietmarw · commit e050eefdb67e · 2026-04-10T16:55:43.000+02:00
diff --git a/OpenHPL/Waterway/Reservoir.mo b/OpenHPL/Waterway/Reservoir.mo
@@ -84,7 +84,9 @@ equation
   end if;
 
    o.mdot = -data.rho * Vdot_o "Output flow connector";
-  o.gz = 0 "Elevation auxiliary variable";
+  if fixElevation then
+    o.gz = 0 "Elevation reference: this component is the root of the connected elevation set";
+  end if;
   //o.T = T_0 "TBD: Output temperature connector";
   annotation (preferredView="info", Documentation(info="<html>
 <h4>Reservoir Model</h4>
diff --git a/OpenHPL/Waterway/ReservoirChannel.mo b/OpenHPL/Waterway/ReservoirChannel.mo
@@ -38,7 +38,9 @@ equation
   // boundaries
   o.mdot =-q*W*data.rho;
   o.p = data.p_a + data.rho * data.g * openChannel.h[N];
-  o.gz = 0 "Elevation auxiliary variable";
+  if fixElevation then
+    o.gz = 0 "Elevation reference: this component is the root of the connected elevation set";
+  end if;
   annotation (
     Documentation(preferredView="info", info="<html>
 <h4>Reservoir Channel Model</h4>
diff --git a/OpenHPL/Waterway/VolumeFlowSource.mo b/OpenHPL/Waterway/VolumeFlowSource.mo
@@ -44,7 +44,9 @@ equation
       color={0,0,127},
       pattern=LinePattern.Dot));
   o.mdot = -data.rho*Vdot;
-  o.gz = 0 "Elevation auxiliary variable";
+  if fixElevation then
+    o.gz = 0 "Elevation reference: this component is the root of the connected elevation set";
+  end if;
   connect(constantVolumeFlow.y, Vdot) annotation (Line(points={{-39,40},{40,40},{40,0},{80,0}}, color={0,0,127}));
   connect(firstOrder.u, outFlow) annotation (Line(
       points={{-62,-20},{-80,-20},{-80,0},{-120,0}},
