Combustion Instability Modeling And Analysis
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Author | : |
Publisher | : |
Total Pages | : 10 |
Release | : 1995 |
Genre | : |
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Download Combustion Instability Modeling and Analysis Book in PDF, Epub and Kindle
It is well known that the two key elements for achieving low emissions and high performance in a gas turbine combustor are to simultaneously establish (1) a lean combustion zone for maintaining low NO(subscript x) emissions and (2) rapid mixing for good ignition and flame stability. However, these requirements, when coupled with the short combustor lengths used to limit the residence time for NO formation typical of advanced gas turbine combustors, can lead to problems regarding unburned hydrocarbons (UHC) and carbon monoxide (CO) emissions, as well as the occurrence of combustion instabilities. The concurrent development of suitable analytical and numerical models that are validated with experimental studies is important for achieving this objective. A major benefit of the present research will be to provide for the first time an experimentally verified model of emissions and performance of gas turbine combustors. The present study represents a coordinated effort between industry, government and academia to investigate gas turbine combustion dynamics. Specific study areas include development of advanced diagnostics, definition of controlling phenomena, advancement of analytical and numerical modeling capabilities, and assessment of the current status of our ability to apply these tools to practical gas turbine combustors. The present work involves four tasks which address, respectively, (1) the development of a fiber-optic probe for fuel-air ratio measurements, (2) the study of combustion instability using laser-based diagnostics in a high pressure, high temperature flow reactor, (3) the development of analytical and numerical modeling capabilities for describing combustion instability which will be validated against experimental data, and (4) the preparation of a literature survey and establishment of a data base on practical experience with combustion instability.
Author | : Timothy C. Lieuwen |
Publisher | : AIAA (American Institute of Aeronautics & Astronautics) |
Total Pages | : 688 |
Release | : 2005 |
Genre | : Science |
ISBN | : |
Download Combustion Instabilities in Gas Turbine Engines Book in PDF, Epub and Kindle
This book offers gas turbine users and manufacturers a valuable resource to help them sort through issues associated with combustion instabilities. In the last ten years, substantial efforts have been made in the industrial, governmental, and academic communities to understand the unique issues associated with combustion instabilities in low-emission gas turbines. The objective of this book is to compile these results into a series of chapters that address the various facets of the problem. The Case Studies section speaks to specific manufacturer and user experiences with combustion instabilities in the development stage and in fielded turbine engines. The book then goes on to examine The Fundamental Mechanisms, The Combustor Modeling, and Control Approaches.
Author | : Dan Zhao |
Publisher | : Academic Press |
Total Pages | : 1145 |
Release | : 2023-02-13 |
Genre | : Technology & Engineering |
ISBN | : 0323899188 |
Download Thermoacoustic Combustion Instability Control Book in PDF, Epub and Kindle
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
Author | : Sungbae Park |
Publisher | : |
Total Pages | : |
Release | : 2001 |
Genre | : |
ISBN | : |
Download Heat Release Dynamics Modeling for Combustion Instability Analysis of Kinetically Controlled Burning Book in PDF, Epub and Kindle
Author | : Vigor Young |
Publisher | : AIAA |
Total Pages | : 606 |
Release | : 1995 |
Genre | : Liquid propellant rockets |
ISBN | : 9781600864186 |
Download Liquid Rocket Engine Combustion Instability Book in PDF, Epub and Kindle
Annotation Since the invention of the V-2 rocket during World War II, combustion instabilities have been recognized as one of the most difficult problems in the development of liquid propellant rocket engines. This book is the first published in the United States on the subject since NASA's Liquid Rocket Combustion Instability (NASA SP-194) in 1972. In this book, experts cover four major subject areas: engine phenomenology and case studies, fundamental mechanisms of combustion instability, combustion instability analysis, and engine and component testing. Especially noteworthy is the inclusion of technical information from Russia and China--a first.
Author | : M. R. Beltran |
Publisher | : |
Total Pages | : 159 |
Release | : 1966 |
Genre | : |
ISBN | : |
Download Analysis of Liquid Rocket Engine Combustion Instability Book in PDF, Epub and Kindle
This report develops a nonlinear model which can be used to predict combustion instability zones in liquid rocket engines. The model is developed by combining a nonlinear instability model with a steady-state vaporization model. Such an analysis determines the zones of an engine in which a tangential mode of high frequency instability is most easily initiated. A rocket engine can be analyzed by incrementally dividing the combustion chamber into annular nodes in the r and z directions. Steady-state properties at each annular node or position in the chamber are computed from the steady-state vaporization computer program. The steady-state program is capable of computing combustion profiles in thermally unstable propellants of the monomethylhydrazine/nitrogen tetroxide type. This model describes droplet vaporization with vapor phase decomposition. Using the computed steady-state properties and the stability limit curves from the instability computer program, stability at each node is determined. This process is repeated for each node to determine a stability map of the entire engine.
Author | : C. A. Jacobson |
Publisher | : |
Total Pages | : 12 |
Release | : 2000 |
Genre | : |
ISBN | : |
Download Active Control of Combustion Instabilities in Gas Turbine Engines for Low Emissions. Part I: Physics-Based and Experimentally Identified Models of Combustion Instability Book in PDF, Epub and Kindle
This paper details the development of a thermoacoustic model and associated dynamic analysis. The model describes the results obtained in a gas fueled experimental combustion program carried out at UTRC. The contents of the paper are (a) the development of a thermoacoustic model composed of acoustic and heat release components, (b) the dynamic analysis of the resulting non-linear model using harmonic balance methods to compute linear stability boundaries and the amplitudes of oscillations and (c) the calibration of the model to experimental data.
Author | : Liu Weidong |
Publisher | : |
Total Pages | : |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Numerical Analysis Model for Radial Combustion Instability in Liquid Propellant Engine Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 291 |
Release | : 1989 |
Genre | : |
ISBN | : |
Download Combustion Instability in Solid Propellant Rockets Book in PDF, Epub and Kindle
This report constitutes the principal of a book on combustion stability in solid propellant rockets. The present report contains nine chapters that are each substantially complete except for some editorial, bibliographical and art work in some chapters. Chapters 1 thru 9 include: Introduction to Combustion Instability; Combustion Chamber Processes; Guidance in Missile System and Motor Design; Fundamentals of Propellant Combustion; Analytical Modeling of Combustor Flow; Modeling of Combustion Dynamics; Bulk Mode Oscillations and L* Instability; and Combustor Stability Analysis.
Author | : C. E. Mitchell |
Publisher | : |
Total Pages | : 18 |
Release | : 1970* |
Genre | : Combustion |
ISBN | : |
Download Analysis of a Combustion Instability Problem Using the Technique of Multiple Scales Book in PDF, Epub and Kindle