Download or read book A Novel Design Methodology for Enhanced Compressor Performance Based on a Dynamic Stability Metric written by Juan Carlos Castiella Ruiz de Velasco and published by . This book was released on 2005 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) compressor design optimization framework allows a versatile definition of the objective function such that any combination of pressure ratio, efficiency and dynamic stability can be prescribed at various operating speeds. The compressor design optimization framework uses an effective blade-to-blade CFD method (fast blade performance prediction method) to predict the blade row performance which is used to evaluate the compressor performance and dynamic stability. The fast blade performance prediction method is estimated to be 100 times faster than a direct numerical simulation and it is shown that the accuracy is within 2% of the direct numerical simulation results. Design Optimization of a Generic Three Stage Compressor. Two different design philosophies commonly used in compressor design practice are adopted. The first design philosophy is aimed at improving efficiency and the second is targeted to improve operability over the entire compressor operating range. The compressor design optimization for enhanced efficiency demonstrates that improvements in efficiency are due to an optimal matching of the compressor stages. The results show an average efficiency improvement of 1% throughout the operating envelope. At maximum climb conditions an efficiency enhancement of 2.7% is achieved. Furthermore, optimizing for efficiency does not deteriorate stability but yields an average improvement in surge margin of 2.6 points. The compressor design optimization based on ...
Download or read book A Design Optimization Framework for Enhanced Compressor Stability Using Dynamic System Modeling written by Vincent Paul Perrot and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compressor Performance written by Theodore Gresh and published by Butterworth-Heinemann. This book was released on 2018-05-30 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compressor Performance: Aerodynamics for the User, Third Edition continues the book's 25 year history as a trusted reference on compressor design and maintenance. This new edition is updated throughout to cover new regulations and technology relevant to compressors, with new content adding coverage of strings of equipment, including gas turbines. Users will find sections that run the full spectrum of information needed for an individual to select, operate, test and maintain axial or centrifugal compressors. In addition, basic aerodynamic theory provides users with the how's and why's of compressor design, and troubleshooting guidelines help maintenance engineers save time in the field. - Provides detailed instructions for best practice field performance tests to ASME standards - Includes illustrations with detailed diagrams of compressor equipment - Presents new case studies of equipment string analysis - Includes extensive reference material in an appendix, including Mollier diagrams, permissible deviations and fluctuations, and surge identification procedures
Download or read book Design and Analysis of Centrifugal Compressors written by Rene Van den Braembussche and published by John Wiley & Sons. This book was released on 2019-04-08 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of fluid dynamic models and experimental results that can help solve problems in centrifugal compressors and modern techniques for a more efficient aerodynamic design. Design and Analysis of Centrifugal Compressors isacomprehensive overview of the theoretical fluid dynamic models describing the flow in centrifugal compressors and the modern techniques for the design of more efficient centrifugal compressors. The author — a noted expert in the field, with over 40 years of experience — evaluates relevant numerical and analytical prediction models for centrifugal compressors with special attention to their accuracy and limitations. Relevant knowledge from the last century is linked with new insights obtained from modern CFD. Emphasis is to link the flow structure, performance and stability to the geometry of the different compressor components. Design and Analysis of Centrifugal Compressors is an accessible resource that combines theory with experimental data and previous research with recent developments in computational design and optimization. This important resource Covers the basic information concerning fluid dynamics that are specific for centrifugal compressors and clarifies the differences with axial compressors Provides an overview of performance prediction models previously developed in combination with extra results from research conducted by the author Describes helpful numerical and analytical models for the flow in the different components in relation to flow stability, operating range and performance Includes the fundamental information for the aerodynamic design of more efficient centrifugal compressors Explains the use of computational fluid dynamics (CFD) for the design and analysis of centrifugal compressors Written for engineers, researchers and designers in industry as well as for academics specializing in the field, Design and Analysis of Centrifugal Compressors offers an up to date overview of the information needed for the design of more effective centrifugal compressors.
Download or read book Compressor Instability with Integral Methods written by Eddie Y.K. Ng and published by Springer Science & Business Media. This book was released on 2007-07-07 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together the quick integral approaches and advances in the field for the prediction of stall and surge problems in the compressor. The book is useful for people involved in the flow analysis, design and testing of rotating machinery. For students, it can be used as a specialized topic of senior undergraduate or graduate study. The book can also serve as self-study material.
Download or read book Centrifugal Compressor Design and Performance written by David Japikse and published by Concepts Eti. This book was released on 1996-01-01 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Axial flow Compressors written by Ronald H. Aungier and published by American Society of Mechanical Engineers. This book was released on 2003 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough description of an aerodynamic design and analysis systems for Axial-Flow Compressors. It describes the basic fluid dynamic and thermodynamic principles, empirical models and numerical methods used for the full range of procedures and analytical tools that an engineer needs for virtually any tupe of Axial-Flow Compressor, aerodynamic design or analysis activity. It reviews and evaluates several design strategies that have been recommended in the literature or which have been found to be effective. It gives a complete description of an actual working system, such that readers can implement all or part of the system. Engineers responsible for developing, maintaining of improving design and analysis systems can benefit greatly from this type of reference. The technology has become so complex and the role of computers so pervasive that about the only way this can be done today is to concentrate on a specific design and analysis system. The author provides practical methodology as well as the details needed to implement the suggested procedures.
Download or read book Compressor Multi Objective Optimisation written by Paride Mesaglio Chittaro and published by . This book was released on 2016-10-11 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamic Stability Analysis of a Multi stage Axial Compressor with Design Implications written by Emmanuel Blanvillain and published by . This book was released on 2003 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of an Energy like Stability Metric for Axial Compressor Design written by Josep Maria Dorca Luque and published by . This book was released on 2003 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Enhanced Computational Method for Axial Compressor Design written by M.J. Hansell and published by . This book was released on 1996 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Improved Blade Passage Model for Estimating Off design Axial Compressor Performance written by Maximilian Lewis Brand and published by . This book was released on 2013 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate estimates of multistage axial compressor performance at off-design operating conditions are essential to the determination of key performance metrics of aircraft gas turbine engines, such as fuel burn, thrust output, and stable operating range. However, conventional RANS based CFD calculations of multistage axial compressors diverge at off-design operating conditions where large separation occurs and the stages are mismatched. This thesis demonstrates the feasibility of a body force based approach to capturing the three-dimensional flow field through a turbomachinery blade row at off-design conditions. A first principles based blade passage model is introduced which addresses the limitations of previous approaches. The inputs to the improved blade passage model are determined from three-dimensional, steady, single-passage RANS CFD calculations. In a first step towards modeling multistage configurations, the improved blade passage model is validated using a fan rotor test case. At the design operating conditions, the stagnation pressure rise coefficient and the work coefficient are both estimated within 5%, and the adiabatic efficiency is estimated within 1 percentage point over most of the span relative to single-passage RANS CFD simulations. At low mass flow operating conditions, where the single-passage RANS CFD diverges, the blade passage model and related body force representation are capable of computing the three-dimensional throughflow with separation and reversed flow. These results pave the way for future unsteady calculations to assess compressor stability and for multistage compressor simulations at off-design conditions.
Download or read book Introduction to Aircraft Flight Mechanics written by Thomas R. Yechout and published by AIAA. This book was released on 2003 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a 15-year successful approach to teaching aircraft flight mechanics at the US Air Force Academy, this text explains the concepts and derivations of equations for aircraft flight mechanics. It covers aircraft performance, static stability, aircraft dynamics stability and feedback control.
Download or read book Improving Compressed Air System Performance written by and published by U.S. Department of Energy. This book was released on with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1969 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt:
