modelTurbineGas_L1_stageStacked

Advanced gas turbine model using the stage stacking method according to N. Gasparovic

Extends from ClaRa.Basics.Icons.SimpleTurbine.

Information

Model description: A multi stage compressor model based on the stage stacking method of Gasparovic able to calculate off-design behaviour according to nominal values

FEATURES

This model uses TILMedia
Stationary mass and energy balances are used
Modeled according to the stage stacking method of Gasparovic
Supports multi stage VIGV's
Calculation of surge and choke margins (assert triggers when crossed)

NOTE: If the design point is not known please determine all needed values with simplier compressor models to ensure the model to run.

For detailed model documentation please consult the html-documentation shipped with ClaRa.

Authorship and Copyright Statement for original (initial) Contribution

Author:

References:

For references please consult the html-documentation shipped with ClaRa.

Remarks:

This component was developed by ClaRa development team under the 3-clause BSD License.

Acknowledgements:

ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).

CLA:

The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf

By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

The ClaRa development team consists of the following partners:

TLK-Thermo GmbH (Braunschweig, Germany)

XRG Simulation GmbH (Hamburg, Germany).

Parameters

Type	Name	Default	Description
TILMedia.Gas.Types.BaseGas	medium	simCenter.flueGasModel
Boolean	allow_reverseFlow	false
Integer	N_stages	12	Number of stages
Integer	N_VIGVstages	1	Number of VIGV stages
Basics.Units.RPM	rpm_nom	3000	\|Nominal Values\|Nomial rotational speed
Real	eta_isen_stage_nom	0.9	\|Nominal Values\|Nominal isentropic stage efficiency (axial: ca. 0.9, radial: ca. 0.82)
Boolean	useExternalVIGVangle	false	True, if an external source should be used to set VIGV angle
Basics.Units.Angle	Delta_alpha_fixed	0	Fixed angle of VIGV (variable inlet guide vanes)
Real	eta_mech	0.99	Mechanical efficiency
Boolean	useMechanicalPort	false	\|Fundamental Definitions\|True, if a mechenical flange should be used
Boolean	steadyStateTorque	false	\|Fundamental Definitions\|True, if steady state mechanical momentum shall be used
Basics.Units.MassFlowRate	m_flow_nom	100	\|Nominal Values\|Nominal mass flow
Real	Pi_nom	7	\|Nominal Values\|Nominal pressure ratio
Basics.Units.Temperature	T_in_nom	293.15	\|Nominal Values\|Nominal inlet temperature
Basics.Units.Pressure	p_in_nom	1.01325e5	\|Nominal Values\|Nominal inlet pressure
Basics.Units.MassFraction[medium.nc - 1]	xi_nom	{0, 0, 0, 0, 0.76, 0.23, 0, 0, 0}	\|Nominal Values\|Nominal gas composition
Boolean	useFixedEnthalpyCharacteristic	false	\|Nominal Values\|True, if a fixed nominal stage enthalpy characteristic should be used
Summary and Visualisation
Boolean	contributeToCycleSummary	simCenter.contributeToCycleSummary	True if component shall contribute to automatic efficiency calculation
Time Response Definitions
Modelica.Units.SI.Inertia	J		Moment of inertia
Advanced
Boolean	useBoundaryAssert	true	True, if simulation should stop when surge or choke boundary is hit
Basics.Units.Time	Tau_aux	0.1	Time constant of auxilliary kappa states
Fundamental Definitions
Basics.Units.RPM	rpm_fixed	3000	Constant rotational speed of pump
Nominal Values
Basics.Units.Length[N_stages]	diameter	ones(N_stages)*1.5	Individual or mean stage diameter
Real[N_stages]	psi_nom_fixed	ones(N_stages)*0.8	Fixed nominal enthalpy stage characteristic (axial: 0.2 to 0.9, radial: 0.9 to 1.4)
Parameters
String	VIGVInfluence	"Lower"	Influence of VIGV on psi, phi and eta

Connectors

Type	Name	Default	Description
ClaRa.Basics.Interfaces.GasPortIn	inlet		inlet flow
ClaRa.Basics.Interfaces.GasPortOut	outlet		outlet flow
Modelica.Mechanics.Rotational.Interfaces.Flange_a	shaft_a
Modelica.Blocks.Interfaces.RealInput	Delta_alpha_input	Delta_alpha	VIGV angle input
Basics.Interfaces.EyeOutGas	eyeOut
Modelica.Mechanics.Rotational.Interfaces.Flange_b	shaft_b

Components

Type	Name	Description
ClaRa.SimCenter	simCenter
ClaRa.Basics.Interfaces.Connected2SimCenter	connected2SimCenter
TILMedia.Gas.Gas_pT	flueGas_inlet
TILMedia.Gas.Gas_pT	flueGas_outlet
Real	Pi	pressure ratio
Basics.Units.Power	P_hyd	Hydraulic power
Basics.Units.VolumeFlowRate	V_flow	Volume flow rate
Basics.Units.Power	P_shaft	Mechanical power at shaft
Basics.Units.RPM	rpm	Rotational speed
Real	tau	Overall temperature ratio
Real	tau_nom	Overall nominal temperature ratio
Real	eta_isen	Overall isentropic efficiency
Real	T_out
Real	kappa	Overall heat capacity ratio
Real	Delta_alpha	Angle of VIGV (variable inlet guide vanes)
Real[i]	Delta_alpha_int	Angle of VIGV (variable inlet guide vanes) for internal calculation
Real[i]	kappa_st	Stage heat capacity ratio
Real	kappa_in
Real[i]	kappa_out_st
Real[i]	psi_nom_st	Nominal stage enthalpy characteristic
Real[i]	psi_rel_st	Relative stage enthalpy characteristic
Real[i]	psi_rel_st_vigv	Relative stage enthalpy characteristic for VIGV
Real[i]	phi_rel_st	Relative stage performance characteristic
Real[i]	phi_surge_rel_st	Relative stage performance characteristic at surge point
Real[i]	eta_isen_st	Nominal stage efficiency
Real[i]	eta_isen_rel_st	Relative stage efficiency
Real[i]	rpm_corr_st	Corrected rotational stage speed
Real[i]	rpm_corr_nom_st	Corrected nominal rotational stage speed
Real[i]	rpm_corr_rel_st	Relative corrected rotational speed
Real[i]	m_flow_corr_st	Corrected stage mass flow
Real[i]	m_flow_corr_nom_st	Corrected nominal stage mass flow
Real[i]	m_flow_corr_rel_st	Relative stage mass flow
Real[i]	epsilon_rel_st	Relative stage pressure characteristic
Real[i]	epsilon_rel_st_max	Relative stage pressure characteristic
Real[i]	epsilon_rel_st_vigv	Relative stage pressure characteristic for VIGV
Real[i]	C_1_st	Constant
Real[i]	C_2_st	Constant
Real[i]	tau_st	Stage temperature ratio
Real[i]	Pi_st	Stage pressure ratio
Real[i]	Pi_st_max	Maximum stage pressure ratio at surge line
Real[i]	Pi_prod_st	Overall pressure ratio until actual stage
Basics.Units.Temperature[i]	T_out_st	Calculated outlet stage temperature
Basics.Units.Pressure[i]	p_out_st	Calculated outlet stage pressure
Basics.Units.HeatCapacityMassSpecific	cp_in_nom	Nominal isobaric heat capacity at stage inlet
Basics.Units.HeatCapacityMassSpecific	cv_in_nom	Nominal isochoric heat capacity at stage inlet
Basics.Units.HeatCapacityMassSpecific[i]	cp_out_nom_st	Nominal isobaric heat capacity at stage outlet
Basics.Units.HeatCapacityMassSpecific[i]	cv_out_nom_st	Nominal isochoric heat capacity at stage outlet
Real[i]	Pi_nom_st	Nominal stage pressure ratio
Real[i]	Pi_nom_st_vigv	Nominal stage pressure ratio for VIGV
Real[i]	Pi_prod_nom_st	Overall nominal pressure ratio until actual stage
Real[i]	kappa_nom_st	Nominal stage heat capacity ratio
Real[i]	kappa_nom_st_vigv	Nominal stage heat capacity ratio for VIGV
Basics.Units.Temperature[i]	T_out_nom_st	Nominal stage outlet temperature
Basics.Units.Efficiency[i]	eta_isen_nom_st	Nominal isentropic stage efficiency
Real[i]	tau_nom_st	Nominal stage temperature ratio
Real[i]	tau_nom_st_vigv	Nominal stage temperature ratio for VIGV
Basics.Units.EnthalpyMassSpecific[i]	h_out_nom_st	Nominal stage outlet enthalpy
Basics.Units.EnthalpyMassSpecific	h_in_nom_st	Nominal compressor inlet enthalpy
Basics.Units.EnthalpyMassSpecific[i]	Delta_h_nom_st	Nominal stage enthalpy difference
Basics.Units.Pressure[i]	p_out_nom_st	Nominal outlet stage pressure
Summary	summary

Name	Description
Outline
Summary

Revisions

For revisions please consult the html-documentation shipped with ClaRa.