GT-POWER自学很有用哦.ppt

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GT-POWER TRAINING Engine Performance Analysis Gamma Technologies, Inc. All information contained in this document is confidential and cannot be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Gamma Technologies, Inc. 1

GT-POWER Content (Basic) • GT-POWER Applications • Solution Method • Discretizing a Model • Orifice Connections • Pipes • Cylinder Ports • Valves Injection In-Cylinder Heat Transfer • • • Combustion • Cylinder Pressure Analysis • Flow Splits • Convergence 2 • Advanced Topics

GT-POWER Content (Advanced) • Pipe Equations (ref) • Turbochargers • Heat Exchangers • SI Fuel Puddling Model • EGR • SI Turb Model • DI Jet Model • Exhaust Aftertreatment • Acoustics (Non-linear) • Acoustics (Linear) • Model Correlation • Transient Simulation • 3-D Combustion (KIVA) • Mean Value / Real Time • CFD Coupling 3 • Basic Topics

GT-POWER Applications 4

Benefits Of Simulation • Saves Time and Money – Shortened development cycle – Reduces number of prototypes required – Optimization of design with minimal prototyping and laboratory testing • Excels Where Traditional Methods Lack – Proof of concept – Validation and sensitivity studies – Component matching when no hardware yet available – Analysis of stubborn performance problems – Simulation of unusual ambient conditions: composition, temperature, pressure 5

Model Fidelity x Real Time 1000 100 10 1 0.1 CPU Time vs. Model Type 3-D CFD (KIVA) 1-D Gas Exchange (GT-POWER) 1-D Mean Value Model (GT-POWER) Real-Time Models (controls modeling) Black Box Models Model Detail 6 Original Figure provided by FEV

GT-POWER Applications • Engine performance analysis • Based on 1-D fluid dynamics • Very flexible, to allow studies of advanced concepts • Detailed thermodynamics • Many combustion & emissions models • Thermal analysis • Acoustics • Engine control analysis via SIMULINK • CFD flow analysis via STAR-CD, fluent and KIVA 7

Solution Method 8

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