Modelica.Fluid.Fittings.BaseClasses.Orifices.ThickEdgedOrifice.Choices

Information

Choices to compute the "Geometry" record for a ThickEdgedOrifice.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
circular	Circular cross section
rectangular	Rectangular cross section
general	General cross section

Modelica.Fluid.Fittings.BaseClasses.Orifices.ThickEdgedOrifice.Choices.circular

Information

Function that returns the ThickEdgedOrifice.Geometry for a circular cross section of the orifice.

Inputs

Type	Name	Default	Description
Diameter	diameter		Inner diameter of circular orifice [m]
Diameter	venaDiameter		Diameter of vena contraction [m]
Length	venaLength		Length of vena contraction [m]

Outputs

Type	Name	Description
Geometry	geometry	Geometry of circular thick edged orifice

Modelica definition

function circular "Circular cross section"
    import SI = Modelica.SIunits;
    import Modelica.Constants.pi;

  input SI.Diameter diameter "Inner diameter of circular orifice";
  input SI.Diameter venaDiameter "Diameter of vena contraction";
  input SI.Length venaLength "Length of vena contraction";

   output ThickEdgedOrifice.Geometry geometry 
    "Geometry of circular thick edged orifice";
algorithm 
   geometry.crossArea := diameter^2*pi/4;
   geometry.perimeter := pi*diameter;
   geometry.venaCrossArea := venaDiameter^2*pi/4;
   geometry.venaPerimeter := pi*venaDiameter;
   geometry.venaLength := venaLength;
end circular;

Modelica.Fluid.Fittings.BaseClasses.Orifices.ThickEdgedOrifice.Choices.rectangular

Information

Function that returns the ThickEdgedOrifice.Geometry for a rectangular cross section of the orifice.

Inputs

Type	Name	Default	Description
Length	width		Inner width of rectangular orifice [m]
Length	height		Inner height of rectangular orifice [m]
Length	venaWidth		Width of vena contraction [m]
Length	venaHeight		Height of vena contraction [m]
Length	venaLength		Length of vena contraction [m]

Outputs

Type	Name	Description
Geometry	geometry	Geometry of circular thick edged orifice

Modelica definition

function rectangular "Rectangular cross section"
    import SI = Modelica.SIunits;
    import Modelica.Constants.pi;

  input SI.Length width "Inner width of rectangular orifice";
  input SI.Length height "Inner height of rectangular orifice";
  input SI.Length venaWidth "Width of vena contraction";
  input SI.Length venaHeight "Height of vena contraction";
  input SI.Length venaLength "Length of vena contraction";

   output ThickEdgedOrifice.Geometry geometry 
    "Geometry of circular thick edged orifice";
algorithm 
   geometry.crossArea := width*height;
   geometry.perimeter := 2*width + 2*height;
   geometry.venaCrossArea := venaWidth*venaHeight;
   geometry.venaPerimeter := 2*venaWidth + 2*venaHeight;
   geometry.venaLength := venaLength;
end rectangular;

Modelica.Fluid.Fittings.BaseClasses.Orifices.ThickEdgedOrifice.Choices.general

Information

Function that returns the ThickEdgedOrifice.Geometry for a general cross section of the orifice.

Inputs

Type	Name	Default	Description
Area	crossArea		Inner cross sectional area [m2]
Length	perimeter		Inner perimeter [m]
Area	venaCrossArea		Cross sectional area of vena contraction [m2]
Length	venaPerimeter		Perimeter of vena contraction [m]
Length	venaLength		Length of vena contraction [m]

Outputs

Type	Name	Description
Geometry	geometry	Geometry of circular thick edged orifice

Modelica definition

function general "General cross section"
    import SI = Modelica.SIunits;
    import Modelica.Constants.pi;

  input SI.Area crossArea "Inner cross sectional area";
  input SI.Length perimeter "Inner perimeter";

  input SI.Area venaCrossArea "Cross sectional area of vena contraction";
  input SI.Length venaPerimeter "Perimeter of vena contraction";
  input SI.Length venaLength "Length of vena contraction";

   output ThickEdgedOrifice.Geometry geometry 
    "Geometry of circular thick edged orifice";
algorithm 
   geometry.crossArea := crossArea;
   geometry.perimeter := perimeter;
   geometry.venaCrossArea := venaCrossArea;
   geometry.venaPerimeter := venaPerimeter;
   geometry.venaLength := venaLength;
end general;