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.
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).
| Name | Description |
|---|---|
 kc_laminar
|
Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime |
| kc_laminar_KC
|
Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped 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 straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence |
| 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 |
 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 straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence |
| kc_turbulent_KC
|
Mean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence |
 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 |
 kc_twoPhaseOverall_KC
|
Local two phase heat transfer coefficient of straight pipe | horizontal or vertical boiling | horizontal condensation |
 kc_twoPhaseOverall_KC_IN_con
|
Input record for function kc_twoPhaseOverall_KC |
| kc_twoPhaseOverall_KC_IN_var
|
Input record for function kc_twoPhaseOverall_KC |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminarMean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | Input record for function kc_laminar |
| Variable inputs | |
| IN_var | Input record for function kc_laminar |
| 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.StraightPipe.kc_laminar_KCMean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | Input record for function kc_laminar_KC |
| Variable inputs | |
| IN_var | Input record for function kc_laminar_KC |
| Name | Description |
|---|---|
| kc | Output for function kc_laminar_KC [W/(m2.K)] |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_conInput record for function kc_laminar and kc_laminar_KC
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).
| Name | Description |
|---|---|
| Straight pipe | |
| d_hyd | Hydraulic diameter [m] |
| L | Length [m] |
| Choices | |
| target | Choice of heat transfer boundary condition |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_varInput record for function kc_laminar and kc_laminar_KC
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).
| 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.StraightPipe.kc_overallMean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | Input record for function kc_overall |
| Variable inputs | |
| IN_var | Input record for function kc_overall |
| 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.StraightPipe.kc_overall_KCMean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped overall flow regime| pressure loss dependence
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | Input record for function kc_overall_KC |
| Variable inputs | |
| IN_var | Input record for function kc_overall_KC |
| Name | Description |
|---|---|
| kc | Output for function kc_overall_KC [W/(m2.K)] |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_conInput record for function kc_overall and kc_overall_KC
Extends from kc_turbulent_IN_con (Input record for function kc_turbulent and kc_turbulent_KC).
| Name | Description |
|---|---|
| Choices | |
| target | Choice of heat transfer boundary condition |
| roughness | Choice of considering surface roughness |
| Straight pipe | |
| d_hyd | Hydraulic diameter [m] |
| L | Length [m] |
| K | Roughness (average height of surface asperities) [m] |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_overall_IN_varInput record for function kc_overall and kc_overall_KC
Extends from Modelica.Fluid.Dissipation.Utilities.Records.General.FluidProperties (Base record for fluid properties).
| 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.StraightPipe.kc_turbulentMean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | Input record for function kc_turbulent |
| Variable inputs | |
| IN_var | Input record for function kc_turbulent |
| 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.StraightPipe.kc_turbulent_KCMean heat transfer coefficient of straight pipe | hydrodynamically developed turbulent flow regime | pressure loss dependence
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | Input record for function kc_turbulent_KC |
| Variable inputs | |
| IN_var | Input record for function kc_turbulent_KC |
| Name | Description |
|---|---|
| kc | Output for function kc_turbulent_KC [W/(m2.K)] |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_conInput record for function kc_turbulent and kc_turbulent_KC
Extends from Utilities.Records.HeatTransfer.StraightPipe (Input for straight pipe).
| Name | Description |
|---|---|
| Straight pipe | |
| d_hyd | Hydraulic diameter [m] |
| L | Length [m] |
| K | Roughness (average height of surface asperities) [m] |
| Choices | |
| roughness | Choice of considering surface roughness |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_turbulent_IN_varInput record for 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).
| 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.StraightPipe.kc_twoPhaseOverall_KCLocal two phase heat transfer coefficient of straight pipe | horizontal or vertical boiling | horizontal condensation
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).
| Name | Description |
|---|---|
| Constant inputs | |
| IN_con | |
| Variable inputs | |
| IN_var | |
| Name | Description |
|---|---|
| kc | Local two phase heat transfer coefficient [W/(m2.K)] |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_conInput record for function kc_twoPhaseOverall_KC
Extends from Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.TwoPhaseFlowHT_IN_con (Base record for two phase heat transfer coefficient).
| Name | Description |
|---|---|
| Choices | |
| target | Choice of (horizontal/vertical) boiling or (horizontal) condensation in pipe |
| Geometry | |
| A_cross | Cross sectional area [m2] |
| perimeter | Wetted perimeter [m] |
| Fluid properties | |
| MM | Molar mass of fluid [g/mol] |
| p_crit | Critical pressure of fluid [Pa] |
Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_twoPhaseOverall_KC_IN_varInput record for function kc_twoPhaseOverall_KC
Extends from Modelica.Fluid.Dissipation.Utilities.Records.HeatTransfer.TwoPhaseFlowHT_IN_var (Base record for two phase heat transfer coefficient).
| Name | Description |
|---|---|
| Choices | |
| target | Choice of (horizontal/vertical) boiling or (horizontal) condensation in pipe |
| Fluid properties | |
| cp_l | Specific heat capacity of liquid [J/(kg.K)] |
| lambda_l | Thermal conductivity of liquid [W/(m.K)] |
| 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] |
| pressure | Mean pressure of fluid [Pa] |
| dh_lg | Evaporation enthalpy of fluid [J/kg] |
| Input | |
| m_flow | Mass flow rate [kg/s] |
| qdot_A | Heat flux at boiling [W/m2] |
| x_flow | Mass flow rate quality |