High Frequency Adaptive Instability Suppression Controls In A Liquid Fueled Combustor
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High Frequency Adaptive Instability Suppression Controls In A Liquid Fueled Combustor
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-20
High Frequency Adaptive Instability Suppression Controls In A Liquid Fueled Combustor written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-20 with categories.
This effort extends into high frequency (>500 Hz), an earlier developed adaptive control algorithm for the suppression of thermo-acoustic instabilities in a liquidfueled combustor. The earlier work covered the development of a controls algorithm for the suppression of a low frequency (280 Hz) combustion instability based on simulations, with no hardware testing involved. The work described here includes changes to the simulation and controller design necessary to control the high frequency instability, augmentations to the control algorithm to improve its performance, and finally hardware testing and results with an experimental combustor rig developed for the high frequency case. The Adaptive Sliding Phasor Averaged Control (ASPAC) algorithm modulates the fuel flow in the combustor with a control phase that continuously slides back and forth within the phase region that reduces the amplitude of the instability. The results demonstrate the power of the method - that it can identify and suppress the instability even when the instability amplitude is buried in the noise of the combustor pressure. The successful testing of the ASPAC approach helped complete an important NASA milestone to demonstrate advanced technologies for low-emission combustors. Kopasakis, George Glenn Research Center NASA/TM-2003-212535, E-14099, NAS 1.15:212535, AIAA Paper 2003-4491
High Frequency Adaptive Instability Suppression Controls In A Liquid Fueled Combustor
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Author : George Kopasakis
language : en
Publisher:
Release Date : 2003
High Frequency Adaptive Instability Suppression Controls In A Liquid Fueled Combustor written by George Kopasakis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Adaptive Instability Suppression Controls In A Liquid Fueled Combustor
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-19
Adaptive Instability Suppression Controls In A Liquid Fueled Combustor written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-19 with categories.
An adaptive control algorithm has been developed for the suppression of combustion thermo-acoustic instabilities. This technique involves modulating the fuel flow in the combustor with a control phase that continuously slides within the stable phase region, in a back and forth motion. The control method is referred to as Adaptive Sliding Phasor Averaged Control (ASPAC). The control method is evaluated against a simplified simulation of the combustion instability. Plans are to validate the control approach against a more physics-based model and an actual experimental combustor rig. Kopasakis, George and DeLaat, John C. Glenn Research Center NASA/TM-2002-211805, NAS 1.15:211805, E-13500, AIAA Paper 2002-4075
Research Technology 2003
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Author :
language : en
Publisher: DIANE Publishing
Release Date :
Research Technology 2003 written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Dynamic Modeling Simulation And Control Of Energy Generation
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Author : Ranjan Vepa
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-09-11
Dynamic Modeling Simulation And Control Of Energy Generation written by Ranjan Vepa and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-11 with Technology & Engineering categories.
This book addresses the core issues involved in the dynamic modeling, simulation and control of a selection of energy systems such as gas turbines, wind turbines, fuel cells and batteries. The principles of modeling and control could be applied to other non-convention methods of energy generation such as solar energy and wave energy. A central feature of Dynamic Modeling, Simulation and Control of Energy Generation is that it brings together diverse topics in thermodynamics, fluid mechanics, heat transfer, electro-chemistry, electrical networks and electrical machines and focuses on their applications in the field of energy generation, its control and regulation. This book will help the reader understand the methods of modelling energy systems for controller design application as well as gain a basic understanding of the processes involved in the design of control systems and regulators. It will also be a useful guide to simulation of the dynamics of energy systems and for implementing monitoring systems based on the estimation of internal system variables from measurements of observable system variables. Dynamic Modeling, Simulation and Control of Energy Generation will serve as a useful aid to designers of hybrid power generating systems involving advanced technology systems such as floating or offshore wind turbines and fuel cells. The book introduces case studies of the practical control laws for a variety of energy generation systems based on nonlinear dynamic models without relying on linearization. Also the book introduces the reader to the use nonlinear model based estimation techniques and their application to energy systems.
Active Control Of High Frequency Combustion Instability In Aircraft Gas Turbine Engines
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Author :
language : en
Publisher:
Release Date : 2003
Active Control Of High Frequency Combustion Instability In Aircraft Gas Turbine Engines written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
39th Aiaa Asme Sae Asee Joint Propulsion Conference Exhibit July 20 23 2003 Huntsville Alabama 03 4450 03 4499
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Author :
language : en
Publisher:
Release Date : 2003
39th Aiaa Asme Sae Asee Joint Propulsion Conference Exhibit July 20 23 2003 Huntsville Alabama 03 4450 03 4499 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Airplanes categories.
41st Aiaa Asme Sae Asee Joint Propulsion Conference Exhibit 10 13 July 2005 Tucson Arizona
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Author :
language : en
Publisher:
Release Date : 2005
41st Aiaa Asme Sae Asee Joint Propulsion Conference Exhibit 10 13 July 2005 Tucson Arizona written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Airplanes categories.
Thermoacoustic Combustion Instability Control
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Author : Dan Zhao
language : en
Publisher: Academic Press
Release Date : 2023-02-13
Thermoacoustic Combustion Instability Control written by Dan Zhao and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-02-13 with Technology & Engineering categories.
Thermoacoustic Combustion Instability Control: Engineering Applications and Computer Codes provides a unique opportunity for researchers, students and engineers to access recent developments from technical, theoretical and engineering perspectives. The book is a compendium of the most recent advances in theoretical and computational modeling and the thermoacoustic instability phenomena associated with multi-dimensional computing methods and recent developments in signal-processing techniques. These include, but are not restricted to a real-time observer, proper orthogonal decomposition (POD), dynamic mode decomposition, Galerkin expansion, empirical mode decomposition, the Lattice Boltzmann method, and associated numerical and analytical approaches. The fundamental physics of thermoacoustic instability occurs in both macro- and micro-scale combustors. Practical methods for alleviating common problems are presented in the book with an analytical approach to arm readers with the tools they need to apply in their own industrial or research setting. Readers will benefit from practicing the worked examples and the training provided on computer coding for combustion technology to achieve useful results and simulations that advance their knowledge and research. Focuses on applications of theoretical and numerical modes with computer codes relevant to combustion technology Includes the most recent modeling and analytical developments motivated by empirical experimental observations in a highly visual way Provides self-contained chapters that include a comprehensive, introductory section that ensures any readers new to this topic are equipped with required technical terms
Research Technology 2004
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Author :
language : en
Publisher: DIANE Publishing
Release Date :
Research Technology 2004 written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.