Modelica.Fluid.Dissipation.Utilities.Records.General

Information

Package Content

Name	Description
PressureLoss	Base record for fluid properties for pressure loss
FluidProperties	Base record for fluid properties
IdealGas_con	Base record for generic pressure loss function | ideal gas | mean density
IdealGas_var	Base record for generic pressure loss function | ideal gas | mean density
NominalDensityViscosity	Base record for generic pressure loss function
NominalPressureLossLawDensity_con	Base record for generic pressure loss function
NominalPressureLossLawDensity_var	Base record for generic pressure loss function
QuadraticVFLOW	Base record for generic pressure loss function | quadratic function (dp=a*Vdot^2 + b*Vdot)
TwoPhaseFlow_con	Base record for two phase Flow
TwoPhaseFlow_var	Base record for two phase flow
IdealGas	Base record for generic pressure loss function | ideal gas | mean density
NominalPressureLossLawDensity	Base record for generic pressure loss function
TwoPhaseFlow	base record for two phase Flow

Modelica.Fluid.Dissipation.Utilities.Records.General.PressureLoss

Information

Parameters

Name	Description
Fluid properties
eta	Dynamic viscosity of fluid [Pa.s]
rho	Density of fluid [kg/m3]

Modelica.Fluid.Dissipation.Utilities.Records.General.FluidProperties

Information

Parameters

Name	Description
Fluid properties
cp	Specific heat capacity of fluid at constant pressure [J/(kg.K)]
eta	Dynamic viscosity of fluid [Pa.s]
lambda	Thermal conductivity of fluid [W/(m.K)]
rho	Density of fluid [kg/m3]

Modelica.Fluid.Dissipation.Utilities.Records.General.IdealGas_con

Information

Parameters

Name	Description
Generic variables
exp	Exponent of pressure loss law
Km	Coefficient for pressure loss law [(Pa)^2/{(kg/s)^exp*K}]
Fluid properties
R_s	Specific gas constant of ideal gas [J/(kg.K)]

Modelica.Fluid.Dissipation.Utilities.Records.General.IdealGas_var

Information

Parameters

Name	Description
Fluid properties
rho_m	Mean density of ideal gas [kg/m3]
T_m	Mean temperature of ideal gas [K]
p_m	Mean pressure of ideal gas [Pa]

Modelica.Fluid.Dissipation.Utilities.Records.General.NominalDensityViscosity

Information

Parameters

Name	Description
Generic variables
dp_nom	Nominal pressure loss (at nominal values of mass flow rate and density) [Pa]
exp	Exponent of pressure loss law
m_flow_nom	Nominal mass flow rate (at nominal values of pressure loss and density) [kg/s]
rho_nom	Nominal density (at nominal values of mass flow rate and pressure loss) [kg/m3]
exp_eta	Exponent for dynamic viscosity dependence
eta_nom	Dynamic viscosity at nominal pressure loss [Pa.s]

Modelica.Fluid.Dissipation.Utilities.Records.General.NominalPressureLossLawDensity_con

Information

Parameters

Name	Description
Generic variables
target	MassFlowRate == use nominal mass flow rate | VolumeFlowRate == use nominal volume flow rate
A_cross	Cross sectional area [m2]
A_cross_nom	Nominal cross sectional area [m2]
dp_nom	Nominal pressure loss (at nominal values of mass flow rate and density) [Pa]
m_flow_nom	Nominal mass flow rate (at nominal values of pressure loss and density) [kg/s]
exp	Exponent of pressure loss law
V_flow_nom	Nominal volume flow rate (at nominal values of pressure loss and density) [m3/s]
rho_nom	Nominal density (at nominal values of mass flow rate and pressure loss) [kg/m3]
zeta_TOT_nom	Nominal pressure loss coefficient (for nominal values) [1]

Modelica.Fluid.Dissipation.Utilities.Records.General.NominalPressureLossLawDensity_var

Information

Parameters

Name	Description
Generic variables
zeta_TOT	Pressure loss coefficient [1]

Modelica.Fluid.Dissipation.Utilities.Records.General.QuadraticVFLOW

Information

Parameters

Name	Description
Generic variables
a	Coefficient for quadratic term [(Pa.s2)/m6]
b	Coefficient for linear term [(Pa.s)/m3]

Modelica.Fluid.Dissipation.Utilities.Records.General.TwoPhaseFlow_con

Information

Parameters

Name	Description
Geometry
A_cross	Cross sectional area [m2]
perimeter	Wetted perimeter [m]
length	Length in fluid flow direction [m]

Modelica.Fluid.Dissipation.Utilities.Records.General.TwoPhaseFlow_var

Information

Parameters

Name	Description
Fluid properties
rho_g	Density of gas [kg/m3]
rho_l	Density of liquid [kg/m3]
eta_g	Dynamic viscosity of gas [Pa.s]
eta_l	Dynamic viscosity of liquid [Pa.s]
sigma	Surface tension [N/m]
Input
x_flow	Mean mass flow rate quality over length

Modelica.Fluid.Dissipation.Utilities.Records.General.IdealGas

Information

Parameters

Name	Description
Generic variables
exp	Exponent of pressure loss law
Km	Coefficient for pressure loss law [(Pa)^2/{(kg/s)^exp*K}]
Fluid properties
R_s	Specific gas constant of ideal gas [J/(kg.K)]
rho_m	Mean density of ideal gas [kg/m3]
T_m	Mean temperature of ideal gas [K]
p_m	Mean pressure of ideal gas [Pa]

Modelica.Fluid.Dissipation.Utilities.Records.General.NominalPressureLossLawDensity

Information

Parameters

Name	Description
Generic variables
target	MassFlowRate == use nominal mass flow rate | VolumeFlowRate == use nominal volume flow rate
A_cross	Cross sectional area [m2]
A_cross_nom	Nominal cross sectional area [m2]
dp_nom	Nominal pressure loss (at nominal values of mass flow rate and density) [Pa]
m_flow_nom	Nominal mass flow rate (at nominal values of pressure loss and density) [kg/s]
exp	Exponent of pressure loss law
V_flow_nom	Nominal volume flow rate (at nominal values of pressure loss and density) [m3/s]
rho_nom	Nominal density (at nominal values of mass flow rate and pressure loss) [kg/m3]
zeta_TOT	Pressure loss coefficient [1]
zeta_TOT_nom	Nominal pressure loss coefficient (for nominal values) [1]

Modelica.Fluid.Dissipation.Utilities.Records.General.TwoPhaseFlow

Information

Parameters

Name	Description
Fluid properties
rho_l	Density of liquid [kg/m3]
rho_g	Density of gas [kg/m3]
eta_l	Dynamic viscosity of liquid [Pa.s]
eta_g	Dynamic viscosity of gas [Pa.s]
x	Vapour fraction [1]
sigma	Surface Tension [N/m]
others
n	Exponent in Blasius equation (0.2-0.25)