Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe

Information

Straight pipe

Laminar flow

Calculation of mean convective heat transfer coefficient kc of a straight pipe at an uniform wall temperature or uniform heat flux and for a hydrodynamically developed or undeveloped laminar fluid flow. See more information.

Turbulent flow

Calculation of mean convective heat transfer coefficient kc of a straight pipe for a hydrodynamically developed turbulent fluid flow at uniform wall temperature or See more information.

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

Package Content

Name Description
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar kc_laminar Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_KC kc_laminar_KC Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_con kc_laminar_IN_con Input record for function kc_laminar and kc_laminar_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_var kc_laminar_IN_var Input record for function kc_laminar and kc_laminar_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall kc_overall Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_KC kc_overall_KC Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_con kc_overall_IN_con Input record for function kc_overall and kc_overall_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_var kc_overall_IN_var Input record for function kc_overall and kc_overall_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent kc_turbulent Mean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_KC kc_turbulent_KC Mean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_con kc_turbulent_IN_con Input record for function kc_turbulent and kc_turbulent_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_var kc_turbulent_IN_var Input record for function kc_turbulent and kc_turbulent_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC kc_twoPhaseOverall_KC Local two phase heat transfer coefficient of straight pipe | horizontal or vertical boiling | horizontal condensation
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_con kc_twoPhaseOverall_KC_IN_con Input record for function kc_twoPhaseOverall_KC
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_var kc_twoPhaseOverall_KC_IN_var Input record for function kc_twoPhaseOverall_KC

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar

Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime

Information

Calculation of mean convective heat transfer coefficient kc of a straight pipe at an uniform wall temperature or uniform heat flux and for a hydrodynamically developed or undeveloped laminar fluid flow. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .

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

Inputs

NameDescription
Constant inputs
IN_conInput record for function kc_laminar
Variable inputs
IN_varInput record for function kc_laminar

Outputs

NameDescription
Output
kcConvective heat transfer coefficient [W/(m2.K)]
PrPrandtl number [1]
ReReynolds number [1]
NuNusselt number [1]
failureStatus0== boundary conditions fulfilled | 1== failure >> check if still meaningful results

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_KC Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_KC

Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime

Information

Calculation of mean convective heat transfer coefficient kc of a straight pipe at an uniform wall temperature or uniform heat flux and for a hydrodynamically developed or undeveloped laminar fluid flow. See more information .

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

Inputs

NameDescription
Constant inputs
IN_conInput record for function kc_laminar_KC
Variable inputs
IN_varInput record for function kc_laminar_KC

Outputs

NameDescription
kcOutput for function kc_laminar_KC [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_con Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_con

Input record for function kc_laminar and kc_laminar_KC

Information

This record is used as input record for the heat transfer function kc_laminar and kc_laminar_KC.

Extends from Utilities.Records.HeatTransfer.StraightPipe (Input for straight pipe).

Parameters

NameDescription
Straight pipe
d_hydHydraulic diameter [m]
LLength [m]
Choices
targetChoice of heat transfer boundary condition

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_var Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_var

Input record for function kc_laminar and kc_laminar_KC

Information

This record is used as input record for the heat transfer function kc_laminar and kc_laminar_KC.

Extends from Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_var (Input record for function kc_overall and kc_overall_KC).

Parameters

NameDescription
Fluid properties
cpSpecific heat capacity of fluid at constant pressure [J/(kg.K)]
etaDynamic viscosity of fluid [Pa.s]
lambdaThermal conductivity of fluid [W/(m.K)]
rhoDensity of fluid [kg/m3]
Input
m_flow[kg/s]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall

Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence

Information

Calculation of mean convective heat transfer coefficient kc of a straight pipe at an uniform wall temperature or uniform heat flux and for a hydrodynamically developed or undeveloped overall fluid flow with neglect or consideration of pressure loss influence. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .

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

Inputs

NameDescription
Constant inputs
IN_conInput record for function kc_overall
Variable inputs
IN_varInput record for function kc_overall

Outputs

NameDescription
Output
kcConvective heat transfer coefficient [W/(m2.K)]
PrPrandtl number [1]
ReReynolds number [1]
NuNusselt number [1]
failureStatus0== boundary conditions fulfilled | 1== failure >> check if still meaningful results

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_KC Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_KC

Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence

Information

Calculation of mean convective heat transfer coefficient kc of a straight pipe at an uniform wall temperature or uniform heat flux and for a hydrodynamically developed or undeveloped overall fluid flow with neglect or consideration of pressure loss influence.See more information .

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

Inputs

NameDescription
Constant inputs
IN_conInput record for function kc_overall_KC
Variable inputs
IN_varInput record for function kc_overall_KC

Outputs

NameDescription
kcOutput for function kc_overall_KC [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_con Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_con

Input record for function kc_overall and kc_overall_KC

Information

This record is used as input record for the heat transfer function kc_overall and kc_overall_KC.

Extends from kc_turbulent_IN_con (Input record for function kc_turbulent and kc_turbulent_KC).

Parameters

NameDescription
Choices
targetChoice of heat transfer boundary condition
roughnessChoice of considering surface roughness
Straight pipe
d_hydHydraulic diameter [m]
LLength [m]
KRoughness (average height of surface asperities) [m]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_var Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_var

Input record for function kc_overall and kc_overall_KC

Information

This record is used as input record for the heat transfer function kc_overall and kc_overall_KC.

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

Parameters

NameDescription
Fluid properties
cpSpecific heat capacity of fluid at constant pressure [J/(kg.K)]
etaDynamic viscosity of fluid [Pa.s]
lambdaThermal conductivity of fluid [W/(m.K)]
rhoDensity of fluid [kg/m3]
Input
m_flow[kg/s]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent

Mean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence

Information

Calculation of mean convective heat transfer coefficient kc of a straight pipe for a hydrodynamically developed turbulent fluid flow at uniform wall temperature or uniform heat flux with neglecting or considering of pressure loss influence. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .

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

Inputs

NameDescription
Constant inputs
IN_conInput record for function kc_turbulent
Variable inputs
IN_varInput record for function kc_turbulent

Outputs

NameDescription
Output
kcConvective heat transfer coefficient [W/(m2.K)]
PrPrandtl number [1]
ReReynolds number [1]
NuNusselt number [1]
failureStatus0== boundary conditions fulfilled | 1== failure >> check if still meaningful results

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_KC Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_KC

Mean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence

Information

Calculation of mean convective heat transfer coefficient kc of a straight pipe for a hydrodynamically developed turbulent fluid flow at uniform wall temperature or uniform heat flux with neglecting or considering of pressure loss influence. See more information .

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

Inputs

NameDescription
Constant inputs
IN_conInput record for function kc_turbulent_KC
Variable inputs
IN_varInput record for function kc_turbulent_KC

Outputs

NameDescription
kcOutput for function kc_turbulent_KC [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_con Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_con

Input record for function kc_turbulent and kc_turbulent_KC

Information

This record is used as input record for the heat transfer function kc_turbulent and kc_turbulent_KC.

Extends from Utilities.Records.HeatTransfer.StraightPipe (Input for straight pipe).

Parameters

NameDescription
Straight pipe
d_hydHydraulic diameter [m]
LLength [m]
KRoughness (average height of surface asperities) [m]
Choices
roughnessChoice of considering surface roughness

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_var Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_var

Input record for function kc_turbulent and kc_turbulent_KC

Information

This record is used as input record for the heat transfer function kc_turbulent and kc_turbulent_KC.

Extends from Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_var (Input record for function kc_overall and kc_overall_KC).

Parameters

NameDescription
Fluid properties
cpSpecific heat capacity of fluid at constant pressure [J/(kg.K)]
etaDynamic viscosity of fluid [Pa.s]
lambdaThermal conductivity of fluid [W/(m.K)]
rhoDensity of fluid [kg/m3]
Input
m_flow[kg/s]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC

Local two phase heat transfer coefficient of straight pipe | horizontal or vertical boiling | horizontal condensation

Information

Calculation of local two phase heat transfer coefficient kc_2ph for (horizontal/vertical) boiling or (horizontal) condensation for an overall flow regime. See more information .

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

Inputs

NameDescription
Constant inputs
IN_con 
Variable inputs
IN_var 

Outputs

NameDescription
kcLocal two phase heat transfer coefficient [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_con Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_con

Input record for function kc_twoPhaseOverall_KC

Information

This record is used as input record for the heat transfer function kc_twoPhaseOverall_KC.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.TwoPhaseFlowHT_IN_con (Base record for two phase heat transfer coefficient).

Parameters

NameDescription
Choices
targetChoice of (horizontal/vertical) boiling or (horizontal) condensation in pipe
Geometry
A_crossCross sectional area [m2]
perimeterWetted perimeter [m]
Fluid properties
MMMolar mass of fluid [g/mol]
p_critCritical pressure of fluid [Pa]

Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_var Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_var

Input record for function kc_twoPhaseOverall_KC

Information

This record is used as input record for the heat transfer function kc_twoPhaseOverall_KC.

Extends from Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.TwoPhaseFlowHT_IN_var (Base record for two phase heat transfer coefficient).

Parameters

NameDescription
Choices
targetChoice of (horizontal/vertical) boiling or (horizontal) condensation in pipe
Fluid properties
cp_lSpecific heat capacity of liquid [J/(kg.K)]
lambda_lThermal conductivity of liquid [W/(m.K)]
rho_gDensity of gas [kg/m3]
rho_lDensity of liquid [kg/m3]
eta_gDynamic viscosity of gas [Pa.s]
eta_lDynamic viscosity of liquid [Pa.s]
pressureMean pressure of fluid [Pa]
dh_lgEvaporation enthalpy of fluid [J/kg]
Input
m_flowMass flow rate [kg/s]
qdot_AHeat flux at boiling [W/m2]
x_flowMass flow rate quality
Automatically generated Thu Oct 1 16:07:59 2020.