Scicos Block
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Thermal-hydraulic pipe

Contents

• Thermal-hydraulic pipe
  • Palette
  • Description
  • Dialog box
  • Default properties
  • Interfacing function
  • Modelica model

Palette

• ThermoHydraulics.cosf - Thermal-Hydraulics toolbox

Description

A PertDP block represents a hydraulic pipe with linear resistance losses. This component represents a hydraulic resistance and pressure loss is directly proportional to the flow rate. Conventionally, the flow direction is the positive when fluid flows from the black port to the white port. The pressure loss is obtained with

$$P_{loss}=P_{black}-P_{white}$$

. The key parameters of this block are the pipes' length, the pipe's diameter, inlet and outlet altitudes, and some other thermal-hydraulic coefficients.

Dialog box

• Longueur du tube : L (m)
  Length of pipe
  Properties : Type 'vec' of size -1.

• Diamètre interne du tube : D (m)
  Pipe diameter
  Properties : Type 'vec' of size -1.

• Coefficient de perte de charge-frottement(S.U) : lambda
  Coefficient of thermohydraluc resistance
  Properties : Type 'vec' of size -1.

• Altitude entrée tuyauterie : z1 (m)
  Altitude of the first port (z1)
  Properties : Type 'vec' of size -1.

• Altitude sortie tuyauterie : z2 (m)
  Altitude of the second port (z2)
  Properties : Type 'vec' of size -1.

• Si $>$0, masse volumique imposée fu fluide : p_rho (kg/m3)
  Fluid density
  Properties : Type 'vec' of size -1.

Default properties

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

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

• Parameters :
  • Modelica parameter name : 'L'
    Default value : 10
    Is a state variable : no.

  • Modelica parameter name : 'D'
    Default value : 0.2
    Is a state variable : no.

  • Modelica parameter name : 'lambda'
    Default value : 0.03
    Is a state variable : no.

  • Modelica parameter name : 'z1'
    Default value : 0
    Is a state variable : no.

  • Modelica parameter name : 'z2'
    Default value : 0
    Is a state variable : no.

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

• File name of the model : PerteDP

Interfacing function

• SCI/macros/scicos_blocks/ModHydraulics/PerteDP.sci [view code]

Modelica model

• SCI/macros/scicos_blocks/ModHydraulics/Hydraulics.mo [view code]