Corrected unit propagation error

mwetter · mwetter · commit 146e172926cf · 2026-03-31T18:13:21.000-07:00
For #2100
diff --git a/IBPSA/Fluid/Actuators/BaseClasses/PartialTwoWayValve.mo b/IBPSA/Fluid/Actuators/BaseClasses/PartialTwoWayValve.mo
@@ -22,7 +22,7 @@ partial model PartialTwoWayValve "Partial model for a two way valve"
   parameter Real kFixed(unit="", min=0) = if dpFixed_nominal > Modelica.Constants.eps
     then m_flow_nominal / sqrt(dpFixed_nominal) else 0
     "Flow coefficient of fixed resistance that may be in series with valve, k=m_flow/sqrt(dp), with unit=(kg.m)^(1/2).";
-  Real kVal(unit="1", min=Modelica.Constants.small)
+  Real kVal(unit="", min=Modelica.Constants.small)
     "Flow coefficient of valve, k=m_flow/sqrt(dp), with unit=(kg.m)^(1/2).";
   Real k(unit="", min=Modelica.Constants.small)
     "Flow coefficient of valve and pipe in series, k=m_flow/sqrt(dp), with unit=(kg.m)^(1/2).";
@@ -97,6 +97,11 @@ each valve opening characteristics has different parameters.
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+March 31, 2026, by Michael Wetter:<br/>
+Corrected unit propagation error that causes Dymola 2026x to not show certain units.<br/>
+See <a href=\"https://github.com/ibpsa/modelica-ibpsa/issues/2100\">#2100</a>.
+</li>
+<li>
 January 19, 2026, by Jelger Jansen:<br/>
 Added unit 1 to parameter <code>kVal</code> to avoid FMU unit errors.<br/>
 This is for <a href=\"https://github.com/ibpsa/modelica-ibpsa/issues/2074\">#2074</a>.
