modelTwoPhaseCavityOnePipe

TwoPhaseCavity for one shell pass

Extends from ThermoSysPro.Fluid.Interfaces.PropertyInterfaces.WaterSteamFluidTypeParameterInterface (Interface to display the water/steam fluid type after parametrization), ThermoSysPro.Fluid.Interfaces.IconColors (Colors of the static, singular and dynamic model icons).

Information

## Copyright © EDF 2002 - 2026   
## ThermoSysPro Version 4.2

Parameters

Type	Name	Default	Description
Boolean	Vertical	true	true: vertical cylinder - false: horizontal cylinder
Units.SI.Radius	R	1.05	Radius of the Cavity cross-sectional area
Units.SI.Length	L	16.27	Cavity length
Units.SI.Length	Lc	2.5	Support plate spacing in cooling zone(chicanes)
Units.SI.Volume	V	piR^2L	Cavity volume
Units.SI.Volume	Vmin	1.e-6
Integer	Ns	10	Number of segments
Integer	NbTubT	10000	Number of total pipes in Cavity
Integer	NbTubV	150	Numbers of pipes in a vertical plan in Cavity
Units.SI.Length	L2	25	tubes length
Units.SI.Diameter	Dext	0.020	External pipe diameter
Real	COP	1	Corrective terme for heat exchange coefficient or Fouling coefficient
Real	Kcorr	1	Corrective terme for heat exchange coefficient between the vapor and the liquid Kvl (with a stagnation point Kcorr = 0.5)
Boolean	Cal_hcond	false	false : condensation heat transfer coefficient = hcond (parameter) - true: calculate by Nusselt corelation
Units.SI.CoefficientOfHeatTransfer	hcond	8e3	Heat transfer coefficient between the vapor and the cooling pipes
Units.SI.CoefficientOfHeatTransfer	Kpa	0.02	Heat exchange coefficient between the wall and the outside ambiant
Units.SI.Temperature	Ta	300	External temperature
Units.SI.Mass	Mp	50e3	Wall mass
Units.SI.SpecificHeatCapacity	cpp	600	Wall specific heat
Boolean	step_square	true	true: Square step - false: Triangular step
Units.SI.PathLength	Ls	L2/Ns	Section length for one pipe
Units.SI.Area	Surf_exe	piDextLs*NbTubT	Section heat exchange surface
Units.SI.Area	Surf_tot	Surf_exe*Ns	Total heat exchange surface
Boolean	dynamic_energy_balance	true	true: dynamic energy balance equation - false: static energy balance equation
Boolean	steady_state	true	true: start from steady state - false: start from (P0, Vf0) (active if dynamic_energy_balance=true)
Real	Vf0	0.5	Fraction of initial water volume in the drum (active if dynamic_energy_balance=true and steady_state=false)
Units.SI.AbsolutePressure	P0	1.e5	Fluid initial pressure (active if dynamic_energy_balance=true and steady_state=false)
Boolean	continuous_flow_reversal	false	true: continuous flow reversal - false: discontinuous flow reversal
Boolean	diffusion	false	true: energy balance equation with diffusion - false: energy balance equation without diffusion
Fluid › Fluid properties
WaterSteamFluidType	wsftype (from WaterSteamFluidTypeParameterInterface)	WaterSteamFluidType.WaterSteam	Water/steam fluid type

Connectors

Type	Name	Description
Interfaces.Connectors.FluidInlet	CvBP	Steam input
Interfaces.Connectors.FluidOutlet	Cl	Water output
ThermoSysPro.Thermal.Connectors.ThermalPort[Ns]	Cth3
ThermoSysPro.InstrumentationAndControl.Connectors.OutputReal	yLevel	Water level
Interfaces.Connectors.FluidInlet	Ce	Water input
Interfaces.Connectors.FluidInlet	CvGCT	Steam input

Components

Type	Name	Description
Units.SI.Pressure	P	Fluid average pressure
Units.SI.Pressure	Pfond	Fluid pressure at the bottom of the cavity
Units.SI.SpecificEnthalpy	hl	Liquid phase specific enthalpy
Units.SI.SpecificEnthalpy	hv	Gas phase specific enthalpy
Units.SI.SpecificEnthalpy	hvIn	Steam average specific enthalpy input cavity
Units.SI.Temperature	Tl	Liquid phase temperature
Units.SI.Temperature	Tv	Gas phase temperature
Units.SI.Volume	Vl	Liquid phase volume
Units.SI.Volume	Vv	Gas phase volume
Real	xl	Mass vapor fraction in the liquid phase
Real	xv	Mass vapor fraction in the gas phase
Units.SI.Density	rhol	Liquid phase density
Units.SI.Density	rhov	Gas phase density
Units.SI.MassFlowRate	BQl	Right hand side of the mass balance equation of the liquid phase
Units.SI.MassFlowRate	BQv	Right hand side of the mass balance equation of the gas phaser
Units.SI.Power	BHl	Right hand side of the energy balance equation of the liquid phase
Units.SI.Power	BHv	Right hand side of the energy balance equation of the gas phase
Units.SI.MassFlowRate	Qcond	Condensation mass flow rate from the vapor phase
Units.SI.MassFlowRate	QcondS	Splitter mass flow rate of the liquid phase from the two-phase input
Units.SI.Power	Wvl	Thermal power exchanged from the gas phase to the liquid phase
Units.SI.Power	Wlp	Thermal power exchanged from the liquid phase to the wall
Units.SI.Power	Wvp	Thermal power exchanged from the gas phase to the wall
Units.SI.Power	Wpa	Thermal power losses to ambiant
Units.SI.Power[Ns]	dW	Power exchange between the wall and the fluid in each section side 3
Units.SI.Power	Wt	Total power exchanged on the water side 3
Units.SI.Power	Wt2	Total power exchanged Deheating zone
Units.SI.Temperature[Ns]	Tp1	Wall temperature in section i of side 1
Units.SI.Temperature	Tp	Wall temperature of cavity
Units.SI.Position	zl	Liquid level in Cavity
Units.SI.Area	Al	Cross sectional area of the liquid phase
Units.SI.Angle	theta	Angle
Units.SI.Area	Avl	Heat exchange surface between the liquid and gas phases
Units.SI.Area	Alp	Liquid phase surface on contact with the wall
Units.SI.Area	Avp	Gas phase surface on contact with the wall
Units.SI.Area	Ape	Wall surface on contact with the outside
Units.SI.ReynoldsNumber	Rel	Liquid phase Reynolds number
Units.SI.ReynoldsNumber	Rev	Steam phase Reynolds number
Units.SI.ReynoldsNumber	Revl	Steam liquid Reynolds number
Units.SI.ThermalConductivity	kl	Liquid phase thermal conductivity
Units.SI.ThermalConductivity	kv	Steam phase thermal conductivity
Units.SI.DynamicViscosity	mul	Liquid phase dynamic viscosity
Units.SI.DynamicViscosity	muv	Steam phase dynamic viscosity
Units.SI.CoefficientOfHeatTransfer[Ns]	hcond3	Heat transfer coefficient between the vapor and the cooling pipes 2
Units.SI.CoefficientOfHeatTransfer	Kvl	Heat exchange coefficient between the liquid and gas phases
Units.SI.CoefficientOfHeatTransfer	Klp	Heat exchange coefficient between the liquid phase and the wall
Units.SI.CoefficientOfHeatTransfer	Kvp	Heat exchange coefficient between the gas phase and the wall
FluidType[5]	fluids	Fluids mixing in volume
Units.SI.Power	Je	Thermal power diffusion from inlet Ce
Units.SI.Power	JvGCT	Thermal power diffusion from inlet CvGCT
Units.SI.Power	JvBP	Thermal power diffusion from inlet CvBP
Units.SI.Power	Jl	Thermal power diffusion from outlet Cl
Units.SI.Power	Jt_l	Total thermal power diffusion for the liquid
Units.SI.Power	Jt_v	Total thermal power diffusion for the vapor
Units.SI.MassFlowRate	gamma_e	Diffusion conductance for inlet Ce
Units.SI.MassFlowRate	gamma_vGCT	Diffusion conductance for inlet CvGCT
Units.SI.MassFlowRate	gamma_vBP	Diffusion conductance for inlet CvBP
Units.SI.MassFlowRate	gamma_l	Diffusion conductance for outlet Cl
Real	re	Value of r(Q/gamma) for inlet Ce
Real	rvGCT	Value of r(Q/gamma) for inlet CvGCT
Real	rvBP	Value of r(Q/gamma) for inlet CvBP
Real	rl	Value of r(Q/gamma) for outlet Cl
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prol	Propri鴩s de l'eau dans le ballon
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prov	Propri鴩s de la vapeur dans le ballon
ThermoSysPro.Properties.WaterSteam.Common.PropThermoSat	lsat
ThermoSysPro.Properties.WaterSteam.Common.PropThermoSat	vsat
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prod
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	proe	Propri鴩s de l'eau dans le ballon
Properties.WaterSteam.Common.ThermoProperties_ph	provIn	Propri鴩s de la vapeur dans le ballon

Revisions

Authors  

Baligh El Hefni  
Daniel Bouskela