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Author : C. J. Steffen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Fuel Injector Design Optimization for an Annular SCRAMjet Geometry written by C. J. Steffen and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (317 download)
Download or read book Fuel Injector Design Optimization for an Annular Scramjet Geometry written by and published by . This book was released on 2003 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christopher J. Steffen
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (988 download)
Download or read book Fuel Injector Design Optimization for an Annular Scramjet Geometry written by Christopher J. Steffen and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Injector Design Optimization For An Annular Scramjet Geometry... NASA/TM-2003-212094... National Aeronautics And Space Administration... January 2003 written by and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Richard Archer
Publisher :
ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (852 download)
Download or read book Multi-objective Design Optimization of a Variable Geometry Spray Fuel Injector written by John Richard Archer and published by . This book was released on 2013 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael D. Payne
Publisher :
ISBN 13 : 9781423563266
Total Pages : 91 pages
Book Rating : 4.5/5 (632 download)
Download or read book A Variable-Complexity Modeling Approach to Scramjet Fuel Injection Array Design Optimization written by Michael D. Payne and published by . This book was released on 1998-03-01 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of fuel air mixing in a scramjet is often accomplished either with Computational Fluid Dynamics (CFD) algorithms or through experimental research. These approaches, while accurate and reliable, are extremely expensive and thus not well suited for use with conventional design optimization methods. In this investigation, Variable Complexity Modeling (VCM) is used to significantly reduce the number of complex, expensive analyses required to optimize the design of a scramjet fuel injection array. A design problem formulation for a lateral transverse injection array is developed and a VCM approach to design optimization is conducted in two stages. Initially, a simplified analysis model is used to provide relatively inexpensive predictions of design fuel air mixing characteristics. A parametric analysis is conducted to explore the design region, and a preliminary optimal design is found using both Sequential Quadratic Programming and a Genetic Algorithm. In the second stage, response surface methodology is supplemented with preliminary stage information to minimize the number of expensive analyses required to finalize the design. It is shown that only 25 design evaluations are required to develop a near optimal design.
Author : Nathan T. McGillivray
Publisher :
ISBN 13 :
Total Pages : 67 pages
Book Rating : 4.:/5 (11 download)
Download or read book Coupling Computational Fluid Dynamics Analysis and Optimization Techniques for Scramjet Engine Design written by Nathan T. McGillivray and published by . This book was released on 2018 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various aspects of hypersonic vehicles are being rapidly explored for improved functionality. One of the main areas of consideration is the fueling of a Supersonic Combusting Ramjet (scramjet) engine. Using Computational Fluid Dynamics (CFD), computer simulations can be performed to analyze the flow physics of a scramjet. In this research, an optimization code, Dakota, is integrated with the CFD to optimize a set of parameters to maximum thrust. In this study, the fuel injection and combustion is replaced with heat sources. This simplification greatly reduces the computational requirements. Additionally, the 3D geometry is reduced to an axisymmetric 2D geometry because three dimension effects like mixing and combustion are not being modeled. With this simplified model, the optimization and CFD algorithm is executed to find the heat addition for maximum thrust. Different optimization methods have been explored to reduce computational times. A genetic algorithm was selected because of its robust abilities. Additionally, a sampling algorithm was selected because of its abilities to explore the whole design space. Furthermore, the sampling method enables additional studies, such as sensitivity studies, to be completed. In addition to optimization studies, calibration studies are performed to obtain the heat source values that correspond to a given experimental wall pressure distribution. Knowledge of the optimized heat distribution will assist in the optimization of fueling splits and injector locations for a more detailed combustion investigation in which similar optimization techniques can be applied.
Author :
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (317 download)
Download or read book Scramjet Fuel Injector Design Parameters and Considerations: Development of a Two-dimensional Tangential Fuel Injector with Constant Pressure at the Flame written by and published by . This book was released on 1972 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 700 pages
Book Rating : 4.F/5 ( download)
Download or read book Aerospace America written by and published by . This book was released on 2002 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (32 download)
Download or read book Optimization of Fuel-air Mixing for a Scramjet Combustor Geometry Using CFD and a Genetic Algorithm written by and published by . This book was released on 2008 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dora Musielak
Publisher : John Wiley & Sons
ISBN 13 : 1119640601
Total Pages : 516 pages
Book Rating : 4.1/5 (196 download)
Download or read book Scramjet Propulsion written by Dora Musielak and published by John Wiley & Sons. This book was released on 2023-01-10 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scramjet Propulsion Explore the cutting edge of HAP technologies with this comprehensive resource from an international leader in her field Scramjet Propulsion: A Practical Introduction delivers a comprehensive treatment of hypersonic air breathing propulsion and its applications. The book covers the most up-to-date hypersonic technologies, like endothermic fuels, fuel injection and flameholding systems, high temperature materials, and TPS, and offers technological overviews of hypersonic flight platforms like the X-43A, X-51A, and HiFIRE. It is organized around easy-to-understand explanations of technical challenges and provides extensive references for the information contained within. The highly accomplished author provides readers with a fulsome description of the theoretical underpinnings of hypersonic technologies, as well as critical design and technology issues affecting hypersonic air breathing propulsion technologies. The book’s combination of introductory theory and advanced instruction about individual hypersonic engine components is ideal for students and practitioners in fields as diverse as hypersonic vehicle and propulsion development for missile defense technologies, launch aerospaceplanes, and civilian transports. Over 250 illustrations and tables round out the material. Readers will also learn from: A thorough introduction to hypersonic flight, hypersonic vehicle concepts, and a review of fundamental principles in hypersonic air breathing propulsion Explorations of the aerothermodynamics of scramjet engines and the design of scramjet components, as well as hypersonic air breathing propulsion combustors and fuels Analyses of dual-mode combustion phenomena, materials structures, and thermal management in hypersonic vehicles, and combined cycle propulsion An examination of CFD analysis, ground and flight testing, and simulation Perfect for researchers and graduate students in aerospace engineering, Scramjet Propulsion: A Practical Introduction is also an indispensable addition to the libraries of engineers working on hypersonic vehicle development seeking a state-of-the-art resource in one of the most potentially disruptive areas of aerospace research today.
Author : M. D. Payne
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Optimizing Scramjet Fuel Injection Array Design written by M. D. Payne and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mostafa Barzegar Gerdroodbary
Publisher : Butterworth-Heinemann
ISBN 13 : 0128211385
Total Pages : 228 pages
Book Rating : 4.1/5 (282 download)
Download or read book Scramjets written by Mostafa Barzegar Gerdroodbary and published by Butterworth-Heinemann. This book was released on 2020-08-14 with total page 228 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
Author :
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (318 download)
Download or read book Pylon Fuel Injector Design for a Scramjet Combustor (Postprint). written by and published by . This book was released on 2007 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper covers the initial development of an in-stream fuel injector concept for a circular hydrocarbon scramjet combustor. Three scramjet fuel injection pylon configurations are established--a basic pylon, a ramp pylon, and an alternating wedge pylon. The first pylon configuration is a baseline. The latter two configurations introduce streamwise vorticity into the flow to increase mixing action. Operating conditions and design considerations are discussed and the fuel injector configurations are presented. A testing methodology relating flight conditions to cold flow conditions is addressed. Initial Computational Fluid Dynamic simulations without fuel injection are presented for a wind tunnel cold flow test point. Two parameters used for comparison among the pylons are axial vorticity generation and total pressure loss. It is found the ramp and alternating wedge pylons increase streamwise vorticity in the flow over the basic pylon. The alternating wedge pylon increases streamwise vorticity the most. It is also found the ramp and alternating wedge pylons result in slightly increased total pressure losses due to the induced streamwise vorticity.
Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (317 download)
Download or read book Three Dimensional CFD Analysis of the GTX Combustor written by and published by . This book was released on 2002 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Josef Dubský
Publisher :
ISBN 13 : 9783844077186
Total Pages : pages
Book Rating : 4.0/5 (771 download)
Download or read book Optimization of the Injector Spray Geometry for a 4-Stroke Direct Injected Petrol Engine written by Josef Dubský and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bryan Sparkman
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (466 download)
Download or read book Scramjet Fuel Injection Array Optimization Utilizing Mixed Variable Pattern Search with Kriging Surrogates written by Bryan Sparkman and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
