Numerical Analysis Of Two And Three Dimensional Recessed Flame Holders For Scramjet Applications

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Numerical Analysis of Two and Three Dimensional Recessed Flame Holders for Scramjet Applications

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Author : Douglas L. Davis
Publisher :
ISBN 13 : 9781423575771
Total Pages : 239 pages
Book Rating : 4.5/5 (757 download)

Book Synopsis Numerical Analysis of Two and Three Dimensional Recessed Flame Holders for Scramjet Applications by : Douglas L. Davis

Download or read book Numerical Analysis of Two and Three Dimensional Recessed Flame Holders for Scramjet Applications written by Douglas L. Davis and published by . This book was released on 1996-09-01 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated the flame holding properties of recessed cavities in supersonic flow using numerical analysis techniques. A simplified analytical model indicated that an important property for flame holding was the lower residence time. Several chemical kinetic rate models for hydrogen and hydrocarbon combustion were compared. The perfectly stirred reactor model also indicated that trace species diffusion should increase flame spreading rate, and that heat loss reduces flame holding limits. After nonreacting calibration, two- dimensional simulations confirmed the perfectly stirred reactor results for blowout limits. Also, the effect of trace species diffusion on flame spreading was shown to be negligible, and the reduced flammability with heat loss was confirmed. Lowering the temperature of the inflow boundary layer was shown to reduce the flammability limits. Three-dimensional cavities were shown to generate axial vorticity and slightly enhance flame spreading. The methodology developed in this research provides a design guide for the size of cavity required to provide flame holding for a scramjet combustor. Also, reduction of heat losses was shown to be a method to improve flame holding performance without increasing the cavity size.

Scramjets

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Author : Mostafa Barzegar Gerdroodbary
Publisher : Butterworth-Heinemann
ISBN 13 : 0128211407
Total Pages : 230 pages
Book Rating : 4.1/5 (282 download)

Book Synopsis Scramjets by : Mostafa Barzegar Gerdroodbary

Download or read book Scramjets written by Mostafa Barzegar Gerdroodbary and published by Butterworth-Heinemann. This book was released on 2020-07-21 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scramjet engines are a type of jet engine and rely on the combustion of fuel and an oxidizer to produce thrust. While scramjets are conceptually simple, actual implementation is limited by extreme technical challenges. Hypersonic flight within the atmosphere generates immense drag, and temperatures found on the aircraft and within the engine can be much greater than that of the surrounding air. Maintaining combustion in the supersonic flow presents additional challenges, as the fuel must be injected, mixed, ignited, and burned within milliseconds. Fuel mixing, along with the configuration and positioning of the injectors and the boundary conditions, play a key role in combustion efficiency. Scramjets: Fuel Mixing and Injection Systems discusses how fuel mixing efficiency and the advantage of injection systems can enhance the performance of the scramjets. The book begins with the introduction of the supersonic combustion chamber and explains the main parameters on the mixing rate. The configuration of scramjets is then introduced with special emphasis on the main effective parameters on the mixing of fuel inside the scramjets. In addition, basic concepts and principles on the mixing rate and fuel distribution within scramjets are presented. Main effective parameters such as range of fuel concentration for the efficient combustion, pressure of fuel jet and various arrangement of jet injections are also explained. This book is for aeronautical and mechanical engineers as well as those working in supersonic combustion who need to know the effects of compressibility on combustion, of shocks on mixing and on chemical reactions, and vorticity on the flame anchoring. - Explains the main applicable approaches for enhancement of supersonic combustion engines and the new techniques of fuel injection - Shows how the interaction of main air stream with fuel injections can develop the mixing inside the scramjets - Presents results of numerical simulations and how they can be used for the development of the combustion engines

Mathematical and Computational Approaches in Advancing Modern Science and Engineering

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Author : Jacques Bélair
Publisher : Springer
ISBN 13 : 3319303791
Total Pages : 777 pages
Book Rating : 4.3/5 (193 download)

Book Synopsis Mathematical and Computational Approaches in Advancing Modern Science and Engineering by : Jacques Bélair

Download or read book Mathematical and Computational Approaches in Advancing Modern Science and Engineering written by Jacques Bélair and published by Springer. This book was released on 2016-08-10 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on five main groups of interdisciplinary problems, this book covers a wide range of topics in mathematical modeling, computational science and applied mathematics. It presents a wealth of new results in the development of modeling theories and methods, advancing diverse areas of applications and promoting interdisciplinary interactions between mathematicians, scientists, engineers and representatives from other disciplines. The book offers a valuable source of methods, ideas, and tools developed for a variety of disciplines, including the natural and social sciences, medicine, engineering, and technology. Original results are presented on both the fundamental and applied level, accompanied by an ample number of real-world problems and examples emphasizing the interdisciplinary nature and universality of mathematical modeling, and providing an excellent outline of today’s challenges. Mathematical modeling, with applied and computational methods and tools, plays a fundamental role in modern science and engineering. It provides a primary and ubiquitous tool in the context making new discoveries, as well as in the development of new theories and techniques for solving key problems arising in scientific and engineering applications. The contributions, which are the product of two highly successful meetings held jointly in Waterloo, Ontario, Canada on the main campus of Wilfrid Laurier University in June 2015, i.e. the International Conference on Applied Mathematics, Modeling and Computational Science, and the Annual Meeting of the Canadian Applied and Industrial Mathematics (CAIMS), make the book a valuable resource for any reader interested in a broader overview of the methods, ideas and tools involved in mathematical and computational approaches developed for other disciplines, including the natural and social sciences, engineering and technology.

33rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit

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Author :
Publisher :
ISBN 13 :
Total Pages : 602 pages
Book Rating : 4.0/5 ( download)

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35th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

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Author :
Publisher :
ISBN 13 :
Total Pages : 500 pages
Book Rating : 4.0/5 ( download)

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36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3700 - 2000-3749

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Author :
Publisher :
ISBN 13 :
Total Pages : 592 pages
Book Rating : 4.0/5 ( download)

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Download or read book 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3700 - 2000-3749 written by and published by . This book was released on 2000 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

40th AIAA Aerospace Sciences Meeting & Exhibit

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Author :
Publisher :
ISBN 13 :
Total Pages : 696 pages
Book Rating : 4.0/5 ( download)

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Dissertation Abstracts International

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Author :
Publisher :
ISBN 13 :
Total Pages : 860 pages
Book Rating : 4.F/5 ( download)

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Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

American Doctoral Dissertations

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ISBN 13 :
Total Pages : 872 pages
Book Rating : 4.3/5 (91 download)

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Download or read book American Doctoral Dissertations written by and published by . This book was released on 1996 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

International Aerospace Abstracts

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ISBN 13 :
Total Pages : 920 pages
Book Rating : 4.F/5 ( download)

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Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:

43rd AIAA Aerospace Sciences Meeting & Exhibit

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Author :
Publisher :
ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.0/5 ( download)

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Download or read book 43rd AIAA Aerospace Sciences Meeting & Exhibit written by and published by . This book was released on 2005 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Scramjet Engine

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Author : Corin Segal
Publisher : Cambridge University Press
ISBN 13 : 0521838150
Total Pages : 271 pages
Book Rating : 4.5/5 (218 download)

Book Synopsis The Scramjet Engine by : Corin Segal

Download or read book The Scramjet Engine written by Corin Segal and published by Cambridge University Press. This book was released on 2009-06-22 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demand for high-speed propulsion has renewed development of the supersonic combustion ramjet engine (Scramjet engine) for hypersonic flight applications.

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit 10-13 July 2005, Tucson, Arizona

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Author :
Publisher :
ISBN 13 :
Total Pages : 572 pages
Book Rating : 4.0/5 ( download)

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Download or read book 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit 10-13 July 2005, Tucson, Arizona written by and published by . This book was released on 2005 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

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Author :
Publisher :
ISBN 13 :
Total Pages : 1280 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1980 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Journal of Propulsion and Power

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Author :
Publisher :
ISBN 13 :
Total Pages : 822 pages
Book Rating : 4.:/5 (318 download)

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Download or read book Journal of Propulsion and Power written by and published by . This book was released on 2008 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:

38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 02-3850 - 02-3899

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Author :
Publisher :
ISBN 13 :
Total Pages : 710 pages
Book Rating : 4.0/5 ( download)

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Download or read book 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 02-3850 - 02-3899 written by and published by . This book was released on 2002 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3600 - 2000-3649

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Author :
Publisher :
ISBN 13 :
Total Pages : 552 pages
Book Rating : 4.0/5 ( download)

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Download or read book 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 2000-3600 - 2000-3649 written by and published by . This book was released on 2000 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: