Scicos Block
fr - eng

##
Thermal-hydraulic control valve

### Contents

- Thermal-hydraulic control valve
  - Palette
  - Description
  - Dialog box
  - Default properties
  - Interfacing function
  - Modelica model

### Palette

- ThermoHydraulics.cosf - Thermal-Hydraulics toolbox

### Description

The VanneReglante block represents a variable orifice control valve. The flow rate through the valve is proportional to the valve opening, i.e.,

where is the valve opening, is the pressure difference, and is the flow rate. This model is only used for the laminar flow regimes. is a constant depending on the valve geometry and mass density of fluid.

### Dialog box

- Cvmax
  Cvmax (maximum opening of the valve)
  Properties : Type 'vec' of size -1.

- p_rho
  Fluid density
  Properties : Type 'vec' of size -1.

### Default properties

- Inputs :
  - Modelica variable name : 'C1'
    Implicit variable.

  - Modelica variable name : 'Ouv'
    Explicit variable.

- Outputs :
  - Modelica variable name : 'C2'
    Implicit variable.

- Parameters :
  - Modelica parameter name : 'Cvmax'
    Default value : 8005.42
    Is a state variable : no.

  - Modelica parameter name : 'p_rho'
    Default value : 0
    Is a state variable : no.

- File name of the model : VanneReglante

### Interfacing function

- SCI/macros/scicos_blocks/Hydraulics/VanneReglante.sci [view code]

### Modelica model

- SCI/macros/scicos_blocks/Hydraulics/VanneReglante.mo [view code]