Download or read book An Automated Design Optimization Tool for Electromagnetic Control of Hypersonic Flows written by and published by . This book was released on 2005 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been computational work to analyze and control hypersonic flows using electromagnetic effects but no true effort has been pursued to automate the flow control process. The lack of a design framework that provides automated multi-disciplinary optimization (MDO) capabilities for this class of problems is the principal motivation for this work. This project develops the foundation of one of the principal components of such MDO environment. Control theory, which has already proved successful dealing with both aerodynamic shape and aero-structural optimization problems, is extended to magnetohydrodynamics (MND). The discrete adjoint approach emerges as the best suitable option to deal with the complex equations that govern MHD, and with the nature of the cost functions that may be used for relevant design problems. The equations governing the three-dimensional flow of a compressible conducting fluid in a magnetic field using the low magnetic Reynolds number approximation are solved with a gas-kinetic BGK scheme. Compared with the more conventional continuum CFD approach, a gas-kinetic CFD approach can be easily extended beyond the continuum regime.
Download or read book An Automated Design Optimization Tool for Electromagnetic Control of Hypersonic Flows written by Lei Tang and published by . This book was released on 2005 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been computational work to analyze and control hypersonic flows using electromagnetic effects but no true effort has been pursued to automate the flow control process. The lack of a design framework that provides automated multi-disciplinary optimization (MDO) capabilities for this class of problems is the principal motivation for this work. This project develops the foundation of one of the principal components of such MDO environment. Control theory, which has already proved successful dealing with both aerodynamic shape and aero-structural optimization problems, is extended to magnetohydrodynamics (MND). The discrete adjoint approach emerges as the best suitable option to deal with the complex equations that govern MHD, and with the nature of the cost functions that may be used for relevant design problems. The equations governing the three-dimensional flow of a compressible conducting fluid in a magnetic field using the low magnetic Reynolds number approximation are solved with a gas-kinetic BGK scheme. Compared with the more conventional continuum CFD approach, a gas-kinetic CFD approach can be easily extended beyond the continuum regime.
Download or read book Automated Design Optimization for Hypersonic Plasma aerodynamics written by Ramakanth Munipalli and published by . This book was released on 2005 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first part we present our ongoing work on the optimization of an MHD energy by-pass concept. Here we consider the optimization of the power generator and accelerator components individually, and are in the process of a simultaneous optimization of an integrated generator-combustor-accelerator concept in a 2-D sense. We have concentrated our efforts on developing an optimization scheme that couples a flow solver (perfect gas Euler and equilibrium gas N-S) with a Poisson solver for the electric field including Hall effects. The architecture/algorithm of the optimization scheme is such that geometric and/or physical parameters can be optimized for a given set of free-stream conditions and objective function. The objective function was MHD power extracted in the case of a MHD generator, and thrust in the case of an accelerator. The second part of this report presents some ideas on how to extend this development and the associated real-gas MHD technology at HyPerComp Inc. into a potential Phase-II. We have developed a higher (4% order and beyond,) order accurate solver for MHD developed under an AFRL contract. We consider possibilities involving the usage of this solver in accurate boundary layer calculations and plasma effects in shear layers as a potential Phase-II extension. The current study of energy bypass concepts may itself be extended into an extensive exploration of finite rate processes in such systems coupled with an efficient optimization routine based on adjoint methods. A masters thesis supported in part by this contract on the optimization problem setup for hypersonic inlets to improve mass capture has been completed. Relevant portions of this thesis have been appended to this report in the third part.
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Oata Analysis and Synthesis (CINOAS) * at Purdue. University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 33 (thesis year 1988) a total of 13,273 theses titles from 23 Canadian and 1 85 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 33 reports theses submitted in 1988, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
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:
Download or read book Hypersonic Vehicles written by Giuseppe Pezzella and published by BoD – Books on Demand. This book was released on 2019-10-02 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the aviation field there is great interest in high-speed vehicle design. Hypersonic vehicles represent the next frontier of passenger transportation to and from space. However, several design issues must be addressed, including vehicle aerodynamics and aerothermodynamics, aeroshape design optimization, aerodynamic heating, boundary layer transition, and so on. This book contains valuable contributions focusing on hypervelocity aircraft design. Topics covered include hypersonic aircraft aerodynamic and aerothermodynamic design, especially aeroshape design optimization, computational fluid dynamics, and scramjet propulsion. The book also discusses high-speed flow issues and the challenges to achieving the dream of affordable hypersonic travel. It is hoped that the information contained herein will allow for the development of safe and efficient hypersonic vehicles.
Download or read book NASA Tech Briefs written by and published by . This book was released on 1991 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1993 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1979 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Station Systems written by and published by . This book was released on 1986 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peterson s Guide to Graduate Programs in Engineering and Applied Sciences written by and published by . This book was released on 1991 with total page 1376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AGARD Index of Publications written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1995 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Finding Guide to AIAA Meeting Papers written by American Institute of Aeronautics and Astronautics. Technical Information Service and published by . This book was released on 1996 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992-12 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Scientific and Technical Publications written by and published by . This book was released on 1991 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
