modelTwoPhaseCavityOnePipe

TwoPhaseCavity for one shell pass

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
Real	Vf0	0.5	Fraction of initial water volume in the Cavity (active if steady_state=false)
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
Units.SI.Pressure	P0	1e5	Fluid initial pressure (active if steady_state=false)
Boolean	steady_state	true	true: start from steady state - false: start from (P0, Vl0)
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: Step square - false: Step triangular
Units.SI.PathLength	Ls	L2/Ns	Section length for pipe
Units.SI.Area	Surf_exe	piDextLs*NbTubT	Section heat exchange surface
Units.SI.Area	Surf_tot	Surf_exe*Ns	Total heat exchange surface

Connectors

Type	Name	Description
Connectors.FluidInlet	CvBP	Steam input
Connectors.FluidOutlet	Cl	Water output
ThermoSysPro.Thermal.Connectors.ThermalPort[Ns]	Cth3
ThermoSysPro.InstrumentationAndControl.Connectors.OutputReal	yLevel	Water level
Connectors.FluidInlet	Ce	Water input
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 spepcific enthalpy
Units.SI.SpecificEnthalpy	hv	Gas phase spepcific enthalpy
Units.SI.SpecificEnthalpy	hvIn	Steam average spepcific 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 input two phases
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 Reynolds number
Units.SI.ReynoldsNumber	Rev	Steam Reynolds number
Units.SI.ReynoldsNumber	Revl	Steam liquid Reynolds number
Units.SI.ThermalConductivity	kl	liquid thermal conductivity
Units.SI.ThermalConductivity	kv	steam thermal conductivity
Units.SI.DynamicViscosity	mul	liquid dynamic viscosity
Units.SI.DynamicViscosity	muv	steam 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
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prol	Propriétés de l'eau dans le ballon
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prov	Propriétés 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	Propriétés de l'eau dans le ballon
Properties.WaterSteam.Common.ThermoProperties_ph	provIn	Propriétés de la vapeur dans le ballon

Revisions

Authors  

Baligh El Hefni  
Daniel Bouskela