Gas Turbine Performance Simulation
6
■ ■ ■ engineering your visions Design, off-design and transient simulation of gas turbines including SAS and thermal effects Gas Turbine Performance Simulation
Transcript of Gas Turbine Performance Simulation
■ ■ ■ engineering your visions
Design, off-design and transient simulation of gas turbines including SAS and thermal effects
Gas Turbine Performance Simulation
Performance simulation
Off-design calculations
User defined or standard maps scaled to cycle reference point
Modeling of heat transfer and SAS with main gas path
Analysis of the interaction between the core engine and accessories
Simulation of gas turbine deterioration and failures (e.g. suspension of cooling
flow, flame out, …)
OVERVIEW
GAS TURBINE PERFORMANCE SIMULATION
GTPsim
SAS connection ports
• can be defined at rot. (inner) or
stationary parts (outer).
(transition between the ref.
frames is also possible)
Main gas path lines
shaft
Heat sink components
• comprehensive model to show capability of
GTPsim to simulate heat transfer
Secondary Air System
• Interaction of bleed/cooling flows
and main gas path performance
Heat transfer link
Flow splitter
HEAT TRANSFER AND SECONARY AIR SYSTEM
Flexibility for combinations of the secondary air system
and thermal network due to object orientated structure
Transient simulation to model thermal response during
fast start and load changes
Bleed flow can be either user specified or it can be a
simulation result depending on the geometry and back-
pressure of the turbine
Components of the secondary air system:
• Splitters (co- and crossflow)
• Mixers
• Valves
• Ducts
• Seals
• Orifices
Heat transfer simulation:
• Convection, conduction and radiation among components and/or with ambient
• Convection based on Nusselt-correlations (default equations or user-defined)
• Build complex thermal networks interacting with the gas path and SAS
Fan Compressor HP Turbine LP Turbine
Heat sink component (outer casing)
Bypass duct
Heat transfer: Main gas to turbine casing
Heat transfer: Casing to fluid
Compr. casing
Heat transfer to ambient
Combustor
Combustor casing
Turbine casing
GAS TURBINE PERFORMANCE SIMULATION
GTPsim
FUNCTIONALITIES
Combine benefits of complex models and simple relations
Generic simulation tool for modeling any kind of gas turbine
Level of simulation detail from basic up to complex SAS/heat
transfer models
0/1-D component models
Drag- and drop interface
Infinite combinations of components allows great flexibility
User-defined correlations and restrictions
Parallel computing
Present results in tables and user configurable graphs
Simulation of gas turbine and aero engine performance
Design point calculation
Off-design calculation
Design parameter sweep
Steady state series (Off-Design series)
Transient simulation
Flight Envelopes
Probability analysis (Monte Carlo simulations)
GAS TURBINE PERFORMANCE SIMULATION
GTPsim
AERO ENGINE APPLICATIONS
Triple-spool Turbofan
Mass flow [kg/s]
Speci
fic
fuel co
nsu
mption[k
g/k
Wh] PR
TT4
Wizard for rapid creation of turbofan,
turbojet, turboshaft and turboprop engine
models
Transient simulation of engine usage during
entire flight
User friendly specification of operating
points across entire flight envelope
Design space exploration for engines
Analysis of thermal management effects
Simulation of the control system response
during load variations
Performance data reverse engineering
GAS TURBINE PERFORMANCE SIMULATION
GTPsim
B&B-AGEMA GmbH
Juelicher Straße 338
52070 Aachen, Germany
Phone : +49 (0) 241 – 56878 – 0
Fax : +49 (0) 241 – 56878 – 79
Email : [email protected]
Web : www.bub-agema.de
Contact
B&B-AGEMA GmbH is an independent
service provider for professional power
plant engineering and turbo machinery
design. Since its foundation in 1995, the
company provides its services for the
benefit of its national and international
clients.
A special focus is laid on
• Design of advanced technology gas
turbine components for both industrial
and aircraft propulsion applications
• Optimization of design and operation
of power plants using modern
computation tools
• Development of customer specific
simulation and condition monitoring
software.
■ ■ ■ engineering your visions
ENGINEERING SERVICE
SOFTWARE DEVELOPMENT
GAS TURBINE PERFORMANCE SIMULATION
