Added Experimtal/AirPTDecoupled.

This is for #21. This medium has been added to allow numerical experiments on the large air-based systems in the Buildings library in order to see what that ddifference is between this medium and the new (yet to be implemented) air model.
ibpsa · Nov 21, 2013 · c10ca1f · c10ca1f
1 parent f63b31b
commit c10ca1f
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Showing 3 changed files with 21 additions and 39 deletions.
diff --git a/...a/GasesPTDecoupled/MoistAirUnsaturated.mo → Annex60/Experimental/AirPTDecoupled.mo b/...a/GasesPTDecoupled/MoistAirUnsaturated.mo → Annex60/Experimental/AirPTDecoupled.mo
@@ -1,8 +1,8 @@
 within Annex60.Media.GasesPTDecoupled;
-package MoistAirUnsaturated
-  "Package with moist air model that decouples pressure and temperature and that has no liquid water"
+package AirPTDecoupled
+  "Package with moist air model that decouples pressure and temperature"
   extends Modelica.Media.Interfaces.PartialCondensingGases(
-     mediumName="GasesPTDecoupled.MoistAirUnsaturated",
+     mediumName="AirPTDecoupled",
      final substanceNames={"water", "air"},
      final reducedX=true,
      final singleState = false,
@@ -419,40 +419,7 @@ end der_specificHeatCapacityCv;
 This medium package models moist air using a gas law in which pressure and temperature
 are independent, which often leads to significantly faster and more robust computations. 
 The specific heat capacities at constant pressure and at constant volume are constant.
-The air is assumed to be not saturated. Even if its relative humidity raises
-above 100%, this model does not compute the amount of liquid that is
-condensed out of the medium. However, the medium can still be used
-in models of air-conditioning equipment that humidifies or dehumidifies
-air.
-</p>
-<p>
-The model is similar to 
-<a href=\"modelica://Annex60.Media.GasesPTDecoupled.MoistAir\">
-Annex60.Media.GasesPTDecoupled.MoistAir</a> but 
-in this model, the air must not be saturated. If the air is saturated, 
-use the medium model
-<a href=\"modelica://Annex60.Media.GasesPTDecoupled.MoistAir\">
-Annex60.Media.IdealGases.MoistAir</a> instead of this one.
-</p>
-<p>
-This medium model is identical to 
-<a href=\"modelica://Annex60.Media.IdealGases.MoistAirUnsaturated\">
-Annex60.Media.IdealGases.MoistAirUnsaturated</a>, except the 
-equation <code>d = p/(R*T)</code> has been replaced with 
-<code>d/dStp = p/pStp</code>, where 
-<code>pStd</code> and <code>dStp</code> are constants at a reference
-temperature and density.
-This formulation often leads to smaller systems of nonlinear equations 
-because pressure and temperature are decoupled, at the expense of accuracy.
-</p>
-<p>
-This medium model has been added to allow an explicit computation of
-the function 
-<code>temperature_phX</code> so that it is once differentiable in <code>h</code>
-with a continuous derivative. This allows obtaining an analytic
-expression for the Jacobian, and therefore simplifies the computation
-of initial conditions that can be numerically challenging for 
-thermo-fluid systems.
+The air is assumed to be not saturated.
 </p>
 </html>", revisions="<html>
 <ul>
@@ -512,4 +479,4 @@ First implementation.
 </li>
 </ul>
 </html>"));
-end MoistAirUnsaturated;
+end AirPTDecoupled;
diff --git a/Annex60/Experimental/package.mo b/Annex60/Experimental/package.mo
@@ -0,0 +1,15 @@
+within Annex60;
+package Experimental "Package with experimental models"
+  extends Modelica.Icons.Package;
+
+  annotation (preferredView="info", Documentation(info="<html>
+<p>
+This package contains models that are experimental. 
+They may be included in the <code>Annex60</code> library
+if they have been shown to be useful.
+For example, this package may include new media models
+so that numerical benchmarks can be conducted easily in order
+to evaluate whether addition of the media is desirable or not.
+</p>
+</html>"));
+end Media;
diff --git a/Annex60/package.order b/Annex60/package.order
@@ -3,4 +3,4 @@ Controls
 Fluid
 Media
 Utilities
-
+Experimental