Download or read book Enhanced Vortex Stability of Trapped Vortex Combustor tvc written by Sony Chindada and published by LAP Lambert Academic Publishing. This book was released on 2011-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The unsteady flow in aircraft and industrial combustors limits fuel-lean operation and influences flame-stability characteristics. Flame instabilities in the combustor can lead to significant performance degradation, reduced combustion efficiencies, unburned hydrocarbons (UHC), possible blow out, structural vibration, lift-off and even catastrophic failure. In Trapped Vortex Combustor (TVC), flame is independent of the main flow and therefore potential disturbances in the main air flow do not affect the stability of the flame. Combustion stability in TVC is achieved using recirculation zones so as to provide continuous source of ignition by mixing hot products and burning gases with incoming fuel and air. Swirl vanes, bluff bodies, and rearward facing steps are commonly used methods to establish recirculation zones for flame stabilization.

Download or read book Experimental and Computational Study of Trapped Vortex Combustor Sector Rig with Tri Pass Diffuser written by R. C. Hendricks and published by BiblioGov. This book was released on 2013-07 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Trapped Vortex Combustor (TVC) potentially offers numerous operational advantages over current production gas turbine engine combustors. These include lower weight, lower pollutant emissions, effective flame stabilization, high combustion efficiency, excellent high altitude relight capability, and operation in the lean burn or RQL modes of combustion. The present work describes the operational principles of the TVC, and extends diffuser velocities toward choked flow and provides system performance data. Performance data include EINOx results for various fuel-air ratios and combustor residence times, combustion efficiency as a function of combustor residence time, and combustor lean blow-out (LBO) performance. Computational fluid dynamics (CFD) simulations using liquid spray droplet evaporation and combustion modeling are performed and related to flow structures observed in photographs of the combustor. The CFD results are used to understand the aerodynamics and combustion features under different fueling conditions. Performance data acquired to date are favorable compared to conventional gas turbine combustors. Further testing over a wider range of fuel-air ratios, fuel flow splits, and pressure ratios is in progress to explore the TVC performance. In addition, alternate configurations for the upstream pressure feed, including bi-pass diffusion schemes, as well as variations on the fuel injection patterns, are currently in test and evaluation phases.

Download or read book Issues in Astronautics and Space Research 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Astronautics and Space Research / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Astronautics and Space Research. The editors have built Issues in Astronautics and Space Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Astronautics and Space Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Astronautics and Space Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Experimental and Computational Study of Trapped Vortex Combustor Sector Rig with Tri Pass Diffuser written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-20 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Trapped Vortex Combustor (TVC) potentially offers numerous operational advantages over current production gas turbine engine combustors. These include lower weight, lower pollutant emissions, effective flame stabilization, high combustion efficiency, excellent high altitude relight capability, and operation in the lean burn or RQL modes of combustion. The present work describes the operational principles of the TVC, and extends diffuser velocities toward choked flow and provides system performance data. Performance data include EINOx results for various fuel-air ratios and combustor residence times, combustion efficiency as a function of combustor residence time, and combustor lean blow-out (LBO) performance. Computational fluid dynamics (CFD) simulations using liquid spray droplet evaporation and combustion modeling are performed and related to flow structures observed in photographs of the combustor. The CFD results are used to understand the aerodynamics and combustion features under different fueling conditions. Performance data acquired to date are favorable compared to conventional gas turbine combustors. Further testing over a wider range of fuel-air ratios, fuel flow splits, and pressure ratios is in progress to explore the TVC performance. In addition, alternate configurations for the upstream pressure feed, including bi-pass diffusion schemes, as well as variations on the fuel injection patterns, are currently in test and evaluation phases. Hendricks, R. C. and Shouse, D. T. and Roquernore, W. M. and Burrus, D. L. and Duncan, B. S. and Ryder, R. C. and Brankovic, A. and Liu, N.-S. and Gallagher, J. R. and Hendricks, J. A. Glenn Research Center NASA/TM-2004-212507, E-12899-1

Download or read book Performance of a Trapped vortex Combustor written by K.-Y. Hsu and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermoacoustic Combustion Instability Control written by Dan Zhao and published by Academic Press. This book was released on 2023-02-13 with total page 1145 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Proceedings of the 1st International Conference on Fluid Thermal and Energy Systems written by Sudev Das and published by Springer Nature. This book was released on 2024-01-17 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the 1st International Conference on Fluid, Thermal and Energy Systems. The contents of this book focus on phase change heat transfer, advanced energy systems, separated flows, turbulence and multi-phase modeling, computational fluid flow and heat transfer, thermal energy storage systems, integrated energy systems, nuclear thermal hydraulics, heat transfer in nanofluids, etc. This book serves as a useful reference to researchers, academicians, and students interested in the broad field of thermo-fluid science and engineering.

Download or read book Numerical Studies on Trapped vortex Concepts for Stable Combustion written by Viswanath R. Katta and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the 1996 ASME Turbo Asia Conference, Nov 5-7, 1996, Jakarta, Indonesia.

Download or read book Numerical Studies on Trapped vortex Combustor written by V. R. Katta and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Combustion Technology written by Debi Prasad Mishra and published by CRC Press. This book was released on 2022-10-24 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume on combustion technology covers recent developments and provides a broad perspective of the key challenges in this emerging field. Divided into two sections, the first one covers micro-combustion systems, hydrogen combustors, combustion systems for gas turbines and IC engines, coal combustors for power plants and gasifier systems. The second section focusses on combustion systems pertaining to aerospace including supersonic combustors, rocket engines and gel propellant combustion. Issues related to energy producing devices in power generation, process industries and aerospace vehicles and efficient and eco-friendly combustion technologies are also explained. Features: Provides comprehensive coverage of recent advances in combustion technology Explains definite concepts about the design and development in combustion systems Captures developments relevant for the aerospace area including gel propellant, aluminium-based propellants, gasification and gas turbines Aims to introduce the combustion system in different industries Expounds novel combustion systems with reference to pertinent renewable technologies This book is aimed at researchers and graduate students in chemical, mechanical and aerospace engineering, energy and environmental engineering, and thermal engineering. This book is also aimed at practicing engineers and decision makers in industry and research labs, and petroleum utilization.

Download or read book Entrainment of Mainstream Flow in a Trapped vortex Combustor written by G. J. Sturgess and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unsteady Supersonic Combustion written by Mingbo Sun and published by Springer Nature. This book was released on 2020-04-14 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the unsteady phenomena needed to understand supersonic combustion. Following an initial chapter that introduces readers to the basic concepts in and classical studies on unsteady supersonic combustion, the book highlights recent studies on unsteady phenomena, which offer insights on e.g. interactions between acoustic waves and flames, flow dominating instability, ignition instability, flame flashback, and near-blowout-limit combustion. In turn, the book discusses in detail the fundamental mechanisms of these phenomena, and puts forward practical suggestions for future scramjet design.

Download or read book Progress in Gas Turbine Performance written by Ernesto Benini and published by BoD – Books on Demand. This book was released on 2013-06-19 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been a remarkable difference in the research and development regarding gas turbine technology for transportation and power generation. The former remains substantially florid and unaltered with respect to the past as the superiority of air-breathing engines compared to other technologies is by far immense. On the other hand, the world of gas turbines (GTs) for power generation is indeed characterized by completely different scenarios in so far as new challenges are coming up in the latest energy trends, where both a reduction in the use of carbon-based fuels and the raising up of renewables are becoming more and more important factors. While being considered a key technology for base-load operations for many years, modern stationary gas turbines are in fact facing the challenge to balance electricity from variable renewables with that from flexible conventional power plants. The book intends in fact to provide an updated picture as well as a perspective view of some of the abovementioned issues that characterize GT technology in the two different applications: aircraft propulsion and stationary power generation. Therefore, the target audience for it involves design, analyst, materials and maintenance engineers. Also manufacturers, researchers and scientists will benefit from the timely and accurate information provided in this volume. The book is organized into three main sections including 10 chapters overall: (i) Gas Turbine and Component Performance, (ii) Gas Turbine Combustion and (iii) Fault Detection in Systems and Materials.

Download or read book Innovation for Sustainable Aviation in a Global Environment written by Dietrich Knörzer and published by IOS Press. This book was released on 2012 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book, published by the European Commission, brings together about 80 papers selected by a Scientific Advisory Committee with the intention to make broadly known the main themes and issues addressed on the occasion of this Convention. Given the strategic importance of the latter, these post-conference proceedings constitute a reference document providing an overview on aeronautical research within Europe more particularly devoted to Commission supported programmes and networks"--Back cover.

Download or read book Engineering Thermodynamics written by Kavati Venkateswarlu and published by CRC Press. This book was released on 2020-12-10 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook comprehensively covers the fundamentals and advanced concepts of thermodynamics in a single volume. It provides a detailed discussion of advanced concepts that include energy efficiency, energy sustainability, energy security, organic Rankine cycle, combined cycle power plants, combined cycle power plant integrated with organic Rankine cycle and absorption refrigeration system, integrated coal gasification combined cycle power plants, energy conservation in domestic refrigerators, and next-generation low-global warming potential refrigerants. Pedagogical features include solved problems and unsolved exercises interspersed throughout the text for better understanding. This textbook is primarily written for senior undergraduate students in the fields of mechanical, automobile, chemical, civil, and aerospace engineering for courses on engineering thermodynamics/thermodynamics and for graduate students in thermal engineering and energy engineering for courses on advanced thermodynamics. It is accompanied by teaching resources, including a solutions manual for instructors. FEATURES Provides design and experimental problems for better understanding Comprehensively discusses power cycles and refrigeration cycles and their advancements Explores the design of energy-efficient buildings to reduce energy consumption Property tables, charts, and multiple-choice questions comprise appendices of the book and are available at https://www.routledge.com/9780367646288.

Download or read book Optical Diagnostics and Numerical Characterization of a Trapped vortex Combustor written by T. R. Meyer and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Turbomachinery International written by and published by . This book was released on 2005 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1977- include a section: Turbomachinery world news, called v. 1-