Robust Airfoil Optimization To Achieve Consistent Drag Reduction Over A Mach Range Final Report Nasa
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Robust Airfoil Optimization To Achieve Consistent Drag Reduction Over A Mach Range
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Author : Wu Li
language : en
Publisher:
Release Date : 2001
Robust Airfoil Optimization To Achieve Consistent Drag Reduction Over A Mach Range written by Wu Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Aerodynamics categories.
We prove mathematically that in order to avoid point-optimization at the sampled design points for multipoint airfoil optimization, the number of design points must be greater than the number of free-design variables. To overcome point-optimization at the sampled design points, a robust airfoil optimization method (called the profile optimization method) is developed and analyzed. This optimization method aims at a consistent drag reduction over a given Mach range and has three advantages: (a) it prevents severe degradation in the off -design performance by using a smart descent direction in each optimization iteration, (b) there is no random airfoil shape distortion for any iterate it generates, and (c) it allows a designer to make a trade-off between a truly optimized airfoil and the amount of computing time consumed. For illustration purposes, we use the profile optimization method to solve a lift-constrained drag minimization problem for 2-D airfoil in Euler ow with 20 free-design variables. A comparison with other airfoil optimization methods is also included.
Robust Airfoil Optimization To Achieve Consistent Drag Reduction Over A Mach Range Final Report Nasa
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 2003*
Robust Airfoil Optimization To Achieve Consistent Drag Reduction Over A Mach Range Final Report Nasa written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003* with categories.
Applied Computational Fluid Dynamics Techniques
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Author : Rainald Löhner
language : en
Publisher: John Wiley & Sons
Release Date : 2008-04-30
Applied Computational Fluid Dynamics Techniques written by Rainald Löhner and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-30 with Science categories.
Computational fluid dynamics (CFD) is concerned with the efficient numerical solution of the partial differential equations that describe fluid dynamics. CFD techniques are commonly used in the many areas of engineering where fluid behavior is an important factor. Traditional fields of application include aerospace and automotive design, and more recently, bioengineering and consumer and medical electronics. With Applied Computational Fluid Dynamics Techniques, 2nd edition, Rainald Löhner introduces the reader to the techniques required to achieve efficient CFD solvers, forming a bridge between basic theoretical and algorithmic aspects of the finite element method and its use in an industrial context where methods have to be both as simple but also as robust as possible. This heavily revised second edition takes a practice-oriented approach with a strong emphasis on efficiency, and offers important new and updated material on; Overlapping and embedded grid methods Treatment of free surfaces Grid generation Optimal use of supercomputing hardware Optimal shape and process design Applied Computational Fluid Dynamics Techniques, 2nd edition is a vital resource for engineers, researchers and designers working on CFD, aero and hydrodynamics simulations and bioengineering. Its unique practical approach will also appeal to graduate students of fluid mechanics and aero and hydrodynamics as well as biofluidics.
Icase Semiannual Report
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Author :
language : en
Publisher:
Release Date : 2002
Icase Semiannual Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
This report summarizes research conducted at ICASE in applied mathematics, computer science, fluid mechanics, and structures and material sciences during the period October 1, 2000 through March 31, 2001.
Activities Of Icase
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Author :
language : en
Publisher:
Release Date : 2002
Activities Of Icase written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Reliability Based Design Optimization Of Series Structural Systems
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Author : Johannes Ovrelid Royset
language : en
Publisher:
Release Date : 2002
Reliability Based Design Optimization Of Series Structural Systems written by Johannes Ovrelid Royset and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Mathematical optimization categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.
Nasa Contractor Report
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Author :
language : en
Publisher:
Release Date : 1978
Nasa Contractor Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Aeronautics categories.
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1998
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aeronautics categories.
Aeronautical Engineering A Cumulative Index To The 1984 Issues Of The Continuing Bibliography
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Author :
language : en
Publisher:
Release Date : 1985
Aeronautical Engineering A Cumulative Index To The 1984 Issues Of The Continuing Bibliography written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.