Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe

Information

Helical pipe

Laminar flow

Calculation of the mean convective heat transfer coefficient kc for a helical pipe in the laminar flow regime. See more information.

Turbulent flow

Calculation of the mean convective heat transfer coefficient kc of a helical pipe for turbulent flow regime. See more information.

Overall flow

Calculation of the mean convective heat transfer coefficient kc of a helical pipe in a hydrodynamically developed laminar and turbulent flow regime. See more information.

Package Content

Name	Description
kc_laminar	Mean heat transfer coefficient of helical pipe | laminar flow regime
kc_laminar_KC	Mean heat transfer coefficient of helical pipe | hydrodynamically developed laminar flow regime
kc_laminar_IN_con	Input record for function kc_laminar and kc_laminar_KC
kc_laminar_IN_var	Input record for function kc_laminar and kc_laminar_KC
kc_overall	Mean heat transfer coefficient of helical pipe | overall flow regime
kc_overall_KC	Mean heat transfer coefficient of helical pipe | overall flow regime
kc_overall_IN_con	Input record for function kc_overall and kc_overall_KC
kc_overall_IN_var	Input record for function kc_overall and kc_overall_KC
kc_turbulent	Mean heat transfer coefficient of helical pipe | hydrodynamically developed turbulent flow regime
kc_turbulent_KC	Mean heat transfer coefficient of helical pipe | hydrodynamically developed turbulent flow regime
kc_turbulent_IN_con	Input record for function kc_turbulent and kc_turbulent_KC
kc_turbulent_IN_var	Input record for function kc_turbulent and kc_turbulent_KC

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_laminar

Information

Calculation of the mean convective heat transfer coefficient kc for a helical pipe in the laminar flow regime. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .

Inputs

Name	Description
Constant inputs
IN_con	Input record for function kc_laminar
Variable inputs
IN_var	Input record for function kc_laminar

Outputs

Name	Description
Output
kc	Convective heat transfer coefficient [W/(m2.K)]
Pr	Prandtl number [1]
Re	Reynolds number [1]
Nu	Nusselt number [1]
failureStatus	0== boundary conditions fulfilled | 1== failure >> check if still meaningful results

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_laminar_KC

Information

Calculation of the mean convective heat transfer coefficient kc for a helical pipe in the laminar flow regime. See more information .

Inputs

Name	Description
Constant inputs
IN_con	Input record for function kc_laminar_KC
Variable inputs
IN_var	Input record for function kc_laminar_KC

Outputs

Name	Description
kc	Output for function kc_laminar_KC [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_laminar_IN_con

Information

Parameters

Name	Description
HelicalPipe
n_nt	Total number of turns
d_hyd	Hydraulic diameter [m]
h	Distance between turns [m]
L	Total length of helical pipe [m]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_laminar_IN_var

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]
Input
m_flow	[kg/s]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_overall

Information

Calculation of the mean convective heat transfer coefficient kc of a helical pipe in a hydrodynamically developed laminar and turbulent flow regime. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .

Inputs

Name	Description
Constant inputs
IN_con	Input record for function kc_overall
Variable inputs
IN_var	Input record for function kc_overall

Outputs

Name	Description
Output
kc	Convective heat transfer coefficient [W/(m2.K)]
Pr	Prandtl number [1]
Re	Reynolds number [1]
Nu	Nusselt number [1]
failureStatus	0== boundary conditions fulfilled | 1== failure >> check if still meaningful results

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_overall_KC

Information

Calculation of the mean convective heat transfer coefficient kc of a helical pipe in a hydrodynamically developed laminar and turbulent flow regime. See more information .

Inputs

Name	Description
Constant inputs
IN_con	Input record for function kc_overall_KC
Variable inputs
IN_var	Input record for function kc_overall_KC

Outputs

Name	Description
kc	Output for function kc_overall_KC [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_overall_IN_con

Information

Parameters

Name	Description
HelicalPipe
n_nt	Total number of turns
d_hyd	Hydraulic diameter [m]
h	Distance between turns [m]
L	Total length of helical pipe [m]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_overall_IN_var

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]
Input
m_flow	[kg/s]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_turbulent

Information

Calculation of the mean convective heat transfer coefficient kc of a helical pipe for turbulent flow regime. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .

Inputs

Name	Description
Constant inputs
IN_con	Input record for function kc_turbulent
Variable inputs
IN_var	Input record for function kc_turbulent

Outputs

Name	Description
Output
kc	Convective heat transfer coefficient [W/(m2.K)]
Pr	Prandtl number [1]
Re	Reynolds number [1]
Nu	Nusselt number [1]
failureStatus	0== boundary conditions fulfilled | 1== failure >> check if still meaningful results

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_turbulent_KC

Information

Calculation of the mean convective heat transfer coefficient kc of a helical pipe for turbulent flow regime. See more information .

Inputs

Name	Description
Constant inputs
IN_con	Input record for function kc_turbulent_KC
Variable inputs
IN_var	Input record for function kc_turbulent_KC

Outputs

Name	Description
kc	Output for function kc_turbulent_KC [W/(m2.K)]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_turbulent_IN_con

Information

Parameters

Name	Description
HelicalPipe
n_nt	Total number of turns
d_hyd	Hydraulic diameter [m]
h	Distance between turns [m]
L	Total length of helical pipe [m]

Modelica.Fluid.Dissipation.HeatTransfer.HelicalPipe.kc_turbulent_IN_var

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]
Input
m_flow	[kg/s]