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An Empirical Analytical Design Methodology For Gas Turbine Combustors
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Book Synopsis An Empirical/Analytical Design Methodology for Gas Turbine Combustors by : H. G. Mongia
Download or read book An Empirical/Analytical Design Methodology for Gas Turbine Combustors written by H. G. Mongia and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Naval Research Reviews written by and published by . This book was released on 1999 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustor Design Criteria Validation. Volume I. Element Tests and Model Validation by : T. W. Bruce
Download or read book Combustor Design Criteria Validation. Volume I. Element Tests and Model Validation written by T. W. Bruce and published by . This book was released on 1979 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the 37-month program for the development of analytical models applicable to small gas turbine combustors. Six analytical models were developed and validated with element tests. The inputs and correlations obtained from the element tests along with basic developments to the models and the numerics provided analytical models when used in judicious conjunction with traditional empirical design and development of two different advanced reverse flow annular combustor concepts. One concept met all program performance goals without any major design modifications and the second concept required only one modification to meet the objectives. Therefore, the analytical models, when used in the proper context in conjunction with empirical methodology will reduce the design and development time and cost associated with gas turbine combustion systems. In addition, the models add to the fundamental under-standing of the physical processes occurring within the combustor which affect its performance. Extensive performance mapping of the two developed combustor concepts was conducted. This data was used to validate and update the computer models. This is Volume I of the three-volume final report covering the combustor element tests and model validation that took place in Task 1 of the program. Volume II reports the results of program Tasks II and III on the design, fabrication, and rig test of the two different combustors. Volume III is the User's Manual for the models.
Book Synopsis Combustor Design Criteria Validation. Volume II. Development Testing of Two Full-Scale Annular Gas Turbine Combustors by : H. Mongia
Download or read book Combustor Design Criteria Validation. Volume II. Development Testing of Two Full-Scale Annular Gas Turbine Combustors written by H. Mongia and published by . This book was released on 1979 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the development testing of two full-scale, reverse-flow, annular combustor systems that were designed based on the empirical/analytical design procedures described in Volume I. The baseline, Concept I, configuration met all design objectives with no hardware modifications. Concept II met the design objectives after only one major hardware modification design procedure for these two test concepts, the combustor-development time was significantly reduced, meeting the main objective of the USARTL Program. Volume III is the User's Manual for the models and includes a description of the models and a listing of the computer codes with instructions on usage.
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1989 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preliminary Gas Turbine Combustor Design Using a Network Approach by :
Download or read book Preliminary Gas Turbine Combustor Design Using a Network Approach written by and published by . This book was released on 1902 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas turbine combustor design represents an ambitious task in numerical and experimental analysis. A significant number of competing criteria must be optimised within specified constraints in order to satisfy legislative and performance requirements. Currently, preliminary combustor flow and heat transfer design procedures, which by necessity involve semi-empirical models, are often restricted in their range of application. The objective of this work is the development of a versatile design tool able to model all conceivable gas turbine combustor types. A network approach provides the foundation for a complete flow and heat transfer analysis to meet this goal. The network method divides the combustor into a number of independent interconnected sub-flows. A pressure-correction methodology solves the continuity equation and a pressure-drop/flow-rate relationship. A constrained equilibrium calculation, incorporating mixing and recirculation models, simulates the combustion process. The new procedures are validated against numerical and experimental data within three annular combustors and one reverse flow combustor. A full conjugate heat transfer model is developed to allow the calculation of liner wall temperature characteristics. The effects of conduction, convection and radiation are included in the model. Film cooling and liner heat pick-up effects are included in the convection calculation. Radiation represents the most difficult mode of heat transfer to simulate in the combustion environment. A discrete transfer radiation model is developed and validated for use within the network solver. The effects of soot concentration on radiation is evaluated with the introduction of radial properties profiles. The accuracy of the heat transfer models are evaluated with comparisons to experimental thermal paint temperature data on a reverse flow and annular combustors. The resulting network analysis code represents a powerful design tool for the combustion engineer incoporati.
Book Synopsis The Design and Performance Analysis of Gas Turbine Combustion Chambers by : I. N. Momtchiloff
Download or read book The Design and Performance Analysis of Gas Turbine Combustion Chambers written by I. N. Momtchiloff and published by . This book was released on 1964 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Network Approach for the Prediction of Flow and Flow Splits Within a Gas Turbine Combustor by : Johannes Jacobus Pretorius
Download or read book A Network Approach for the Prediction of Flow and Flow Splits Within a Gas Turbine Combustor written by Johannes Jacobus Pretorius and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The modern gas turbine engine industry needs a simpler and faster method to facilitate the design of gas turbine combustors due to the enormous costs of experimental test rigging and detailed computational fluid dynamics (CFD) simulations. Therefore, in the initial design phase, a couple of preliminary designs are conducted to establish initial values for combustor performance and geometric characteristics. In these preliminary designs, various one-dimensional models using analytical and empirical formulations may be used. One of the disadvantages of existing models is that they are typically geometric dependant, i.e. they apply only to the geometry they are derived for. Therefore the need for a more versatile design tool exists. In this work, which constitutes the first step in the development of such a versatile design tool, a single equation-set network simulation model to describe both steady state compressible and incompressible isothermal flow is developed. The continuity and momentum equations are solved through a hybrid type network model analogy which makes use of the SIMPLE pressure correction methodology. The code has the capability to efficiently compute flow through elements where the loss factor K is highly flow dependant and accurately describes variable area duct flow in the case of incompressible flow. The latter includes ducts with discontinuously varying flow sectional areas. Proper treatment of flow related non-linearities, such as flow friction, is facilitated in a natural manner in the proposed methodology. The proposed network method is implemented into a Windows based simulation package with a user interface. The ability of the proposed method to accurately model both compressible and incompressible flow is demonstrated through the analyses of a number of benchmark problems. It will be shown that the proposed methodology yields similar or improved results as compared to other's work. The proposed method is applied to a research combustor to solve for isothermal flows and flow splits. The predicted flows were in relatively close agreement with measured data as well as detailed CFD analysis.
Book Synopsis Optimisation Techniques for Combustor Design by : Oboetswe Seraga Motsamai
Download or read book Optimisation Techniques for Combustor Design written by Oboetswe Seraga Motsamai and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For gas turbines, the demand for high-performance, more efficient and longer-life turbine blades is increasing. This is especially so, now that there is a need for high-power and low-weight aircraft gas turbines. Thus, the search for improved design methodologies for the optimisation of combustor exit temperature profiles enjoys high priority. Traditional experimental methods are found to be too time-consuming and costly, and they do not always achieve near-optimal designs. In addition to the above deficiencies, methods based on semi-empirical correlations are found to be lacking in performing three-dimensional analyses and these methods cannot be used for parametric design optimisation. Computational fluid dynamics has established itself as a viable alternative to reduce the amount of experimentation needed, resulting in a reduction in the time scales and costs of the design process. Furthermore, computational fluid dynamics provides more insight into the flow process, which is not available through experimentation only. However, the fact remains that, because of the trial-and-error nature of adjusting the parameters of the traditional optimisation techniques used in this field, the designs reached cannot be called optimum . The trial-and-error process depends a great deal on the skill and experience of the designer. Also, the above technologies inhibit the improvement of the gas turbine power output by limiting the highest exit temperature possible, putting more pressure on turbine blade cooling technologies. This limitation to technology can be overcome by implementing a search algorithm capable of finding optimal design parameters. Such an algorithm will perform an optimum search prior to computational fluid dynamics analysis and rig testing. In this thesis, an efficient methodology is proposed for the design optimisation of a gas turbine combustor exit temperature profile. The methodology involves the combination of computational fluid dynamics with a gradient-based mathematical optimiser, using successive objective and constraint function approximations (Dynamic-Q) to obtain the optimum design. The methodology is tested on three cases, namely: (a) The first case involves the optimisation of the combustor exit temperature profile with two design variables related to the dilution holes, which is a common procedure. The combustor exit temperature profile was optimised, and the pattern factor improved, but pressure drop was very high. (b) The second case involves the optimisation of the combustor exit temperature profile with four design variables, one equality constraint and one inequality constraint based on pressure loss. The combustor exit temperature profile was also optimised within the constraints of pressure. Both the combustor exit temperature profile and pattern factor were improved. (c) The third case involves the optimisation of the combustor exit temperature profile with five design variables. The swirler angle and primary hole parameters were included in order to allow for the effect of the central toroidal recirculation zone on the combustor exit temperature profile. Pressure loss was also constrained to a certain maximum. The three cases show that a relatively recent mathematical optimiser (Dynamic-Q), combined with computational fluid dynamics, can be considered a strong alternative to the design optimisation of a gas turbine combustor exit temperature profile. This is due to the fact that the proposed methodology provides designs that can be called near-optimal, when compared with that yielded by traditional methods and computational fluid dynamics alone.
Book Synopsis Fundamentals of Turbulent and Multiphase Combustion by : Kenneth Kuan-yun Kuo
Download or read book Fundamentals of Turbulent and Multiphase Combustion written by Kenneth Kuan-yun Kuo and published by John Wiley & Sons. This book was released on 2012-04-24 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed coverage of advanced combustion topics from the author of Principles of combustion, Second Edition Turbulence, turbulent combustion, and multiphase reacting flows have become major research topics in recent decades due to their application across diverse fields, including energy, environment, propulsion, transportation, industrial safety, and nanotechnology. Most of the knowledge accumulated from this research has never been published in book form—until now. Fundamentals of Turbulent and Multiphase Combustion presents up-to-date, integrated coverage of the fundamentals of turbulence, combustion, and multiphase phenomena along with useful experimental techniques, including non-intrusive, laser-based measurement techniques, providing a firm background in both contemporary and classical approaches. Beginning with two full chapters on laminar premixed and non-premixed flames, this book takes a multiphase approach, beginning with more common topics and moving on to higher-level applications. In addition, Fundamentals of Turbulent and Multiphase Combustion: Addresses seven basic topical areas in combustion and multiphase flows, including laminar premixed and non-premixed flames, theory of turbulence, turbulent premixed and non-premixed flames, and multiphase flows Covers spray atomization and combustion, solid-propellant combustion, homogeneous propellants, nitramines, reacting boundary-layer flows, single energetic particle combustion, and granular bed combustion Provides experimental setups and results whenever appropriate Supported with a large number of examples and problems as well as a solutions manual, Fundamentals of Turbulent and Multiphase Combustion is an important resource for professional engineers and researchers as well as graduate students in mechanical, chemical, and aerospace engineering.
Book Synopsis 50 Years of CFD in Engineering Sciences by : Akshai Runchal
Download or read book 50 Years of CFD in Engineering Sciences written by Akshai Runchal and published by Springer Nature. This book was released on 2020-03-09 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prof. D. Brian Spalding, working with a small group of students and colleagues at Imperial College, London in the mid-to late-1960’s, single-handedly pioneered the use of Computational Fluid Dynamics (CFD) for engineering practice.This book brings together advances in computational fluid dynamics in a collection of chapters authored by leading researchers, many of them students or associates of Prof. Spalding. The book intends to capture the key developments in specific fields of activity that have been transformed by application of CFD in the last 50 years. The focus is on review of the impact of CFD on these selected fields and of the novel applications that CFD has made possible. Some of the chapters trace the history of developments in a specific field and the role played by Spalding and his contributions. The volume also includes a biographical summary of Brian Spalding as a person and as a scientist, as well as tributes to Brian Spalding by those whose life was impacted by his innovations. This volume would be of special interest to researchers, practicing engineers, and graduate students in various fields, including aerospace, energy, power and propulsion, transportation, combustion, management of the environment, health and pharmaceutical sciences.
Book Synopsis Novel Combustion Concepts for Sustainable Energy Development by : Avinash K Agarwal
Download or read book Novel Combustion Concepts for Sustainable Energy Development written by Avinash K Agarwal and published by Springer. This book was released on 2014-12-19 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises research studies of novel work on combustion for sustainable energy development. It offers an insight into a few viable novel technologies for improved, efficient and sustainable utilization of combustion-based energy production using both fossil and bio fuels. Special emphasis is placed on micro-scale combustion systems that offer new challenges and opportunities. The book is divided into five sections, with chapters from 3-4 leading experts forming the core of each section. The book should prove useful to a variety of readers, including students, researchers, and professionals.
Book Synopsis 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit by :
Download or read book 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit written by and published by . This book was released on 1998 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Highlights of the Global Modeling and Simulation Branch for 1986-1987 by : Wayman E. Baker
Download or read book Research Highlights of the Global Modeling and Simulation Branch for 1986-1987 written by Wayman E. Baker and published by . This book was released on 1988 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in IC Engines and Combustion Technology by : Ashwani K. Gupta
Download or read book Advances in IC Engines and Combustion Technology written by Ashwani K. Gupta and published by Springer Nature. This book was released on 2020-08-18 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select peer-reviewed proceedings of the 26th National Conference on IC Engines and Combustion (NCICEC) 2019 which was organised by the Department of Mechanical Engineering, National Institute of Technology Kurukshetra under the aegis of The Combustion Institute-Indian Section (CIIS). The book covers latest research and developments in the areas of combustion and propulsion, exhaust emissions, gas turbines, hybrid vehicles, IC engines, and alternative fuels. The contents include theoretical and numerical tools applied to a wide range of combustion problems, and also discusses their applications. This book can be a good reference for engineers, educators and researchers working in the area of IC engines and combustion.
Book Synopsis Papers Presented at the AIAA/ASME/SAE/ASEE 25th Joint Propulsion Conference by :
Download or read book Papers Presented at the AIAA/ASME/SAE/ASEE 25th Joint Propulsion Conference written by and published by . This book was released on 1989 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: