modelKornhauser1994
Recip compressor correlation of Kornhauser 1994
Extends from ThermoCycle.Components.Units.ExpansionAndCompressionMachines.Reciprocating.BaseClasses.PartialCylinderHeatTransfer.
Information
Reference:
- (Kornhauser1994)
- Kornhauser, A. & Smith, J.
- Application of a complex Nusselt number to heat transfer during compression and expansion
- Transactions of the ASME. Journal of Heat Transfer, 1994, Vol. 116(3), pp. 536-542
You can find the paper describing the correlation here: http://heattransfer.asmedigitalcollection.asme.org/article.aspx?articleid=1441736
Implementation:
2013 for Technical University of Denmark, DTU Mechanical Engineering, Kongens Lyngby, Denmark by Jorrit Wronski (jowr@mek.dtu.dk)
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | initialize (from PartialCylinderHeatTransfer) | 2 | 0: None, 1: High HTC, 2: Low HTC |
| Real | a | 0.56 | Factor |
| Real | b | 0.69 | Peclet exponent |
| Internal Interface | |||
| Integer | n (from PartialHeatTransfer) | 1 | Number of heat transfer segments |
| Boolean | use_k (from PartialHeatTransfer) | false | = true to use k value for thermal isolation |
| Ambient | |||
| SI.CoefficientOfHeatTransfer | k (from PartialHeatTransfer) | 0 | Heat transfer coefficient to ambient |
| SI.Temperature | T_ambient (from PartialHeatTransfer) | system.T_ambient | Ambient temperature |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Interfaces.HeatPorts_a | heatPorts (from PartialHeatTransfer) | Heat port to component boundary |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.ThermodynamicState | states (from PartialHeatTransfer) | Thermodynamic states of flow segments | |
| SI.Area | surfaceAreas (from PartialHeatTransfer) | Heat transfer areas | |
| SI.HeatFlowRate | Q_flows (from PartialHeatTransfer) | Heat flow rates | |
| Modelica.Fluid.System | system (from PartialHeatTransfer) | System wide properties | |
| Medium.Temperature | Ts (from PartialHeatTransfer) | Medium.temperature(states) | Temperatures defined by fluid states |
| Modelica.SIunits.Angle | crankshaftAngle (from PartialCylinderHeatTransfer) | ||
| Modelica.SIunits.Area | pistonCrossArea (from PartialCylinderHeatTransfer) | ||
| Modelica.SIunits.Length | strokeLength (from PartialCylinderHeatTransfer) | ||
| Modelica.SIunits.CoefficientOfHeatTransfer | h (from PartialCylinderHeatTransfer) | ||
| Modelica.SIunits.HeatFlux | q_w (from PartialCylinderHeatTransfer) | Heat flux from wall | |
| Modelica.SIunits.Velocity | c_c (from PartialCylinderHeatTransfer) | Current piston speed | |
| Modelica.SIunits.Velocity | c_m (from PartialCylinderHeatTransfer) | Mean piston speed | |
| Modelica.SIunits.Angle | theta (from PartialCylinderHeatTransfer) | Crankshaft angle | |
| Modelica.SIunits.AngularVelocity | omega_c (from PartialCylinderHeatTransfer) | Current angular crank velocity | |
| Modelica.SIunits.AngularVelocity | omega_m (from PartialCylinderHeatTransfer) | Mean angular crank velocity | |
| Modelica.SIunits.Length | bore (from PartialCylinderHeatTransfer) | ||
| Modelica.SIunits.Length | stroke (from PartialCylinderHeatTransfer) | ||
| Modelica.SIunits.Length | position (from PartialCylinderHeatTransfer) | Clearance from cyl. head | |
| Modelica.SIunits.Length | position_m (from PartialCylinderHeatTransfer) | Mean clearance from cyl. head | |
| Real | HTC_gain (from PartialCylinderHeatTransfer) | Amplifier for h[i] | |
| Modelica.SIunits.Length | Gamma | Characteristic length | |
| Modelica.SIunits.Velocity | Lambda | Characteristic velocity | |
| Modelica.SIunits.PecletNumber | Pe | ||
| Modelica.SIunits.SpecificHeatCapacityAtConstantPressure | cp | ||
| Modelica.SIunits.Volume | volume | Cylinder volume | |
| Modelica.SIunits.Length | D_h | Hydraulic diameter | |
| Modelica.SIunits.ThermalDiffusivity | alpha_f | Thermal diffusivity | |
| Modelica.SIunits.NusseltNumber | Nu | ||
| Modelica.SIunits.ThermalConductivity | lambda | ||
| Modelica.SIunits.DynamicViscosity | eta |