Modelica.Fluid.Dissipation.PressureLoss.General

Package for generic pressure loss calculations

Information


General

General pressure loss for ideal gas

Calculation of a generic pressure loss for an ideal gas using mean density. See more information.

Generic pressure loss depending on density and viscosity

Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density, nominal dynamic viscosity) at an operation point via interpolation. This generic function considers the pressure loss law via a pressure loss exponent and the influence of density and dynamic viscosity on pressure loss. See more information.

Generic pressure loss depending on density

Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density) via interpolation from an operation point. See more information.

Generic pressure loss depending on pressure loss coefficient

Calculation of a generic pressure loss in dependence of a pressure loss coefficient. See more information.

Generic pressure loss depending on volume flow rate

Calculation of a generic pressure loss with linear or quadratic dependence on volume flow rate. See more information.

Extends from Modelica.Icons.VariantsPackage (Icon for package containing variants).

Package Content

NameDescription
Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_DP dp_idealGas_DP Generic pressure loss | calculate pressure loss | ideal gas | mean density
Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_MFLOW dp_idealGas_MFLOW Generic pressure loss | calculate mass flow rate | ideal gas | mean density
Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_IN_con dp_idealGas_IN_con Input record for function dp_idealGas_DP and dp_idealGas_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_IN_var dp_idealGas_IN_var Input record for function dp_idealGas_DP and dp_idealGas_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_DP dp_nominalDensityViscosity_DP Generic pressure loss | calculate mass flow rate | nominal operation point | pressure loss law (exponent) | density and dynamic viscosity dependence
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_MFLOW dp_nominalDensityViscosity_MFLOW Generic pressure loss | calculate M_FLOW (compressible) | nominal operation point | pressure loss law (exponent) | density and dynamic viscosity dependence
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_IN_con dp_nominalDensityViscosity_IN_con Output record for function dp_nominalDensityViscosity_DP and dp_nominalDensityViscosity_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_IN_var dp_nominalDensityViscosity_IN_var Output record for function dp_nominalDensityViscosity_DP and dp_nominalDensityViscosity_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_DP dp_nominalPressureLossLawDensity_DP Generic pressure loss | calculate pressure loss | nominal operation point | pressure loss law (coefficient and exponent) | density dependence
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_MFLOW dp_nominalPressureLossLawDensity_MFLOW Generic pressure loss | calculate mass flow rate | nominal operation point | pressure loss law (coefficient and exponent) | density dependence
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_con dp_nominalPressureLossLawDensity_IN_con Input record for function dp_nominalPressureLossLawDensity_DP and dp_nominalPressureLossLawDensity_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_var dp_nominalPressureLossLawDensity_IN_var Input record for function dp_nominalPressureLossLawDensity_DP and dp_nominalPressureLossLawDensity_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_DP dp_pressureLossCoefficient_DP Generic pressure loss | calculate pressure loss | pressure loss coefficient (zeta_TOT)
Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_MFLOW dp_pressureLossCoefficient_MFLOW Generic pressure loss | calculate mass flow rate | pressure loss coefficient (zeta_TOT)
Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_IN_con dp_pressureLossCoefficient_IN_con Input record for function dp_pressureLossCoefficient_DP and dp_pressureLossCoefficient_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_IN_var dp_pressureLossCoefficient_IN_var Input record for function dp_pressureLossCoefficient_DP and dp_pressureLossCoefficient_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_DP dp_volumeFlowRate_DP Generic pressure loss | calculate pressure loss | quadratic function (dp=a*V_flow^2 + b*V_flow)
Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_MFLOW dp_volumeFlowRate_MFLOW Generic pressure loss | calculate mass flow rate | quadratic function (dp=a*V_flow^2 + b*V_flow)
Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_IN_con dp_volumeFlowRate_IN_con Input record for function dp_volumeFlowRate_DP and dp_volumeFlowRate_MFLOW
Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_IN_var dp_volumeFlowRate_IN_var Input record for function dp_volumeFlowRate_DP and dp_volumeFlowRate_MFLOW

Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_DP Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_DP

Generic pressure loss | calculate pressure loss | ideal gas | mean density

Information


Calculation of a generic pressure loss for an ideal gas using mean density.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_idealGas_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_idealGas_DP
Variable inputs
IN_varInput record for function dp_idealGas_DP
Input
m_flowMass flow rate [kg/s]

Outputs

NameDescription
DPOutput for function dp_idealGas_DP [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_MFLOW Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_MFLOW

Generic pressure loss | calculate mass flow rate | ideal gas | mean density

Information


Calculation of a generic pressure loss for an ideal gas using mean density.

Generally this function is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. On the other hand the function dp_idealGas_DP is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_idealGas_MFLOW
Variable inputs
IN_varInput record for function dp_idealGas_MFLOW
Input
dpPressure loss [Pa]

Outputs

NameDescription
M_FLOWOutput for function dp_idealGas_MFLOW [kg/s]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_IN_con Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_IN_con

Input record for function dp_idealGas_DP and dp_idealGas_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_idealGas_DP  and
 dp_idealGas_MFLOW .

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.IdealGas_con (Base record for generic pressure loss function | ideal gas | mean density).

Parameters

NameDescription
Generic variables
expExponent of pressure loss law
KmCoefficient for pressure loss law [(Pa)^2/{(kg/s)^exp*K}]
Fluid properties
R_sSpecific gas constant of ideal gas [J/(kg.K)]
Linearisation
dp_smoothStart linearisation for smaller pressure loss [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_IN_var Modelica.Fluid.Dissipation.PressureLoss.General.dp_idealGas_IN_var

Input record for function dp_idealGas_DP and dp_idealGas_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_idealGas_DP and
 dp_idealGas_MFLOW.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.IdealGas_var (Base record for generic pressure loss function | ideal gas | mean density).

Parameters

NameDescription
Fluid properties
rho_mMean density of ideal gas [kg/m3]
T_mMean temperature of ideal gas [K]
p_mMean pressure of ideal gas [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_DP Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_DP

Generic pressure loss | calculate mass flow rate | nominal operation point | pressure loss law (exponent) | density and dynamic viscosity dependence

Information


Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density, nominal dynamic viscosity) at an operation point via interpolation. This generic function considers the pressure loss law via a pressure loss exponent and the influence of density and dynamic viscosity on pressure loss.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_nominalDensityViscosity_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_nominalDensityViscosity_DP
Variable inputs
IN_varInput record for function dp_nominalDensityViscosity_DP
Input
m_flowMass flow rate [kg/s]

Outputs

NameDescription
DPOutput for function dp_nominalDensityViscosity_DP [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_MFLOW Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_MFLOW

Generic pressure loss | calculate M_FLOW (compressible) | nominal operation point | pressure loss law (exponent) | density and dynamic viscosity dependence

Information


Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density, nominal dynamic viscosity) at an operation point via interpolation. This generic function considers the pressure loss law via a pressure loss exponent and the influence of density and dynamic viscosity on pressure loss.

Generally this function is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. On the other hand the function dp_genericDensityViscosity_DP is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_nominalDensityViscosity_MFLOW
Variable inputs
IN_varInput record for function dp_nominalDensityViscosity_MFLOW
Input
dpPressure loss [Pa]

Outputs

NameDescription
M_FLOWOutput for function dp_nominalDensityViscosity_MFLOW [kg/s]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_IN_con Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_IN_con

Output record for function dp_nominalDensityViscosity_DP and dp_nominalDensityViscosity_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_nominalDensityViscosity_DP and
 dp_nominalDensityViscosity_MFLOW.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.NominalDensityViscosity (Base record for generic pressure loss function).

Parameters

NameDescription
Generic variables
dp_nomNominal pressure loss (at nominal values of mass flow rate and density) [Pa]
expExponent of pressure loss law
m_flow_nomNominal mass flow rate (at nominal values of pressure loss and density) [kg/s]
rho_nomNominal density (at nominal values of mass flow rate and pressure loss) [kg/m3]
exp_etaExponent for dynamic viscosity dependence
eta_nomDynamic viscosity at nominal pressure loss [Pa.s]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_IN_var Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_IN_var

Output record for function dp_nominalDensityViscosity_DP and dp_nominalDensityViscosity_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_nominalDensityViscosity_DP and
 dp_nominalDensityViscosity_MFLOW.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.PressureLoss (Base record for fluid properties for pressure loss).

Parameters

NameDescription
Fluid properties
etaDynamic viscosity of fluid [Pa.s]
rhoDensity of fluid [kg/m3]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_DP Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_DP

Generic pressure loss | calculate pressure loss | nominal operation point | pressure loss law (coefficient and exponent) | density dependence

Information


Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density) via interpolation from an operation point. This generic function considers the pressure loss law via a nominal pressure loss (dp_nom), a pressure loss coefficient (zeta_TOT) and a pressure loss law exponent (exp) as well as the influence of density on pressure loss.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_nominalPressureLossLawDensity_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_nominalPressureLossLawDensity_DP
Variable inputs
IN_varInput record for function dp_nominalPressureLossLawDensity_DP
Input
m_flowMass flow rate [kg/s]

Outputs

NameDescription
DPOutput for function dp_nominalPressureLossLawDensity_yesAJac_DP [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_MFLOW Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_MFLOW

Generic pressure loss | calculate mass flow rate | nominal operation point | pressure loss law (coefficient and exponent) | density dependence

Information


Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density) via interpolation from an operation point. This generic function considers the pressure loss law via a nominal pressure loss (dp_nom), a pressure loss coefficient (zeta_TOT) and a pressure loss law exponent (exp) as well as the influence of density on pressure loss.

Generally this function is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. On the other hand the function dp_nominalPressurelosslawDensity_DP is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_nominalPressureLossLawDensity_MFLOW
Variable inputs
IN_varInput record for function dp_nominalPressureLossLawDensity_MFLOW
Input
dpPressure loss [Pa]

Outputs

NameDescription
M_FLOWOutput for function dp_nominalPressurelosslawDensity_MFLOW [kg/s]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_con Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_con

Input record for function dp_nominalPressureLossLawDensity_DP and dp_nominalPressureLossLawDensity_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_nominalPressureLosslawDensity_DP and
 dp_nominalPressureLosslawDensity_MFLOW.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.NominalPressureLossLawDensity_con (Base record for generic pressure loss function).

Parameters

NameDescription
Generic variables
targetMassFlowRate == use nominal mass flow rate | VolumeFlowRate == use nominal volume flow rate
A_crossCross sectional area [m2]
A_cross_nomNominal cross sectional area [m2]
dp_nomNominal pressure loss (at nominal values of mass flow rate and density) [Pa]
m_flow_nomNominal mass flow rate (at nominal values of pressure loss and density) [kg/s]
expExponent of pressure loss law
V_flow_nomNominal volume flow rate (at nominal values of pressure loss and density) [m3/s]
rho_nomNominal density (at nominal values of mass flow rate and pressure loss) [kg/m3]
zeta_TOT_nomNominal pressure loss coefficient (for nominal values) [1]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_var Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_var

Input record for function dp_nominalPressureLossLawDensity_DP and dp_nominalPressureLossLawDensity_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_nominalPressureLosslawDensity_DP and
 dp_nominalPressureLosslawDensity_MFLOW.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.NominalPressureLossLawDensity_var (Base record for generic pressure loss function).

Parameters

NameDescription
Generic variables
zeta_TOTPressure loss coefficient [1]
Fluid properties
rhoDensity of fluid [kg/m3]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_DP Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_DP

Generic pressure loss | calculate pressure loss | pressure loss coefficient (zeta_TOT)

Information


Calculation of a generic pressure loss in dependence of a pressure loss coefficient.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_pressureLossCoefficient_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for dp_pressureLossCoefficient_DP
Variable inputs
IN_varInput record for dp_pressureLossCoefficient_DP
Input
m_flowMass flow rate [kg/s]

Outputs

NameDescription
DPOutput for function dp_pressureLossCoefficient_DP [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_MFLOW Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_MFLOW

Generic pressure loss | calculate mass flow rate | pressure loss coefficient (zeta_TOT)

Information


Calculation of a generic pressure loss in dependence of a pressure loss coefficient.

Generally this function is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. On the other hand the function dp_pressureLossCoefficient_DP is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_pressureLossCoefficient_MFLOW
Variable inputs
IN_varInput record for function dp_pressureLossCoefficient_MFLOW
Input
dpPressure loss [Pa]

Outputs

NameDescription
M_FLOWOutput for function dp_pressureLossCoefficientt_MFLOW [kg/s]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_IN_con Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_IN_con

Input record for function dp_pressureLossCoefficient_DP and dp_pressureLossCoefficient_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_pressureLossCoefficient_DP and
 dp_pressureLossCoefficient_MFLOW.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

NameDescription
Generic variables
A_crossCross sectional area [m2]
Linearisation
dp_smoothStart linearisation for decreasing pressure loss [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_IN_var Modelica.Fluid.Dissipation.PressureLoss.General.dp_pressureLossCoefficient_IN_var

Input record for function dp_pressureLossCoefficient_DP and dp_pressureLossCoefficient_MFLOW

Information


This record is used as  input record  for the pressure loss function
 dp_pressureLossCoefficient_DP and
 dp_pressureLossCoefficient_MFLOW.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

NameDescription
Generic variables
zeta_TOTPressure loss coefficient [1]
FluidProperties
rhoDensity of fluid [kg/m3]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_DP Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_DP

Generic pressure loss | calculate pressure loss | quadratic function (dp=a*V_flow^2 + b*V_flow)

Information


Calculation of a generic pressure loss with linear or quadratic dependence on volume flow rate. The function can be used to calculate pressure loss at known mass flow rate or mass flow rate at known pressure loss.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_volumeFlowRate_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_volumeFlowRate_DP
Variable inputs
IN_varInput record for function dp_volumeFlowRate_DP
Input
m_flowMass flow rate [kg/s]

Outputs

NameDescription
DPOutput for function dp_volumeFlowRate_DP [Pa]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_MFLOW Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_MFLOW

Generic pressure loss | calculate mass flow rate | quadratic function (dp=a*V_flow^2 + b*V_flow)

Information


Calculation of a generic pressure loss with linear or quadratic dependence on volume flow rate. The function can be used to calculate pressure loss at known mass flow rate or mass flow rate at known pressure loss.

Generally this function is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. On the other hand the function dp_volumeFlowRate_DP is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. See more information.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

NameDescription
Constant inputs
IN_conInput record for function dp_volumeFlowRate_MFLOW
Variable inputs
IN_varInput record for function dp_volumeFlowRate_MFLOW
Input
dpPressure loss [Pa]

Outputs

NameDescription
M_FLOWOutput for function dp_volumeFlowRate_MFLOW [kg/s]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_IN_con Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_IN_con

Input record for function dp_volumeFlowRate_DP and dp_volumeFlowRate_MFLOW

Information


This record is used as  input record  for the pressure loss function
  dp_volumeFlowRate_DP and
  dp_volumeFlowRate_MFLOW.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.QuadraticVFLOW (Base record for generic pressure loss function | quadratic function (dp=a*Vdot^2 + b*Vdot)).

Parameters

NameDescription
Generic variables
aCoefficient for quadratic term [(Pa.s2)/m6]
bCoefficient for linear term [(Pa.s)/m3]

Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_IN_var Modelica.Fluid.Dissipation.PressureLoss.General.dp_volumeFlowRate_IN_var

Input record for function dp_volumeFlowRate_DP and dp_volumeFlowRate_MFLOW

Information


This record is used as  input record  for the pressure loss function
  dp_volumeFlowRate_DP and
  dp_volumeFlowRate_MFLOW.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

NameDescription
Fluid properties
rhoDensity of fluid [kg/m3]

Automatically generated Mon Sep 23 17:20:51 2013.