A Real Time Method For Estimating Viscous Forebody Drag Coefficients
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A Real Time Method For Estimating Viscous Forebody Drag Coefficients
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Author : Stephen A. Whitmore
language : en
Publisher:
Release Date : 2000
A Real Time Method For Estimating Viscous Forebody Drag Coefficients written by Stephen A. Whitmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Drag (Aerodynamics) categories.
This paper develops a real-time method based on the law of the wake for estimating forebody skin-friction coefficients. The incompressible law-of-the-wake equations are numerically integrated across the boundary layer depth to develop an engineering model that relates longitudinally averaged skin-friction coefficients to local boundary layer thickness. Solutions applicable to smooth surfaces with pressure gradients and rough surfaces with negligible pressure gradients are presented. Model accuracy is evaluated by comparing model predictions with previously measured flight data. This integral law procedure is beneficial in that skin-friction coefficients can be indirectly evaluated in real-time using a single boundary layer height measurement. In this concept a reference pitot probe is inserted into the flow, well above the anticipated maximum thickness of the local boundary layer. Another probe is servomechanism-driven and floats within the boundary layer. A controller regulates the position of the floating probe. The measured servomechanism of this second probe provides an indirect measurement of both local and longitudinally averaged skin friction. Simulation results showing the performance of the control law for a noisy boundary layer are then presented.
A Real Time Method For Estimating Viscous Forebody Drag Coefficients
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Author :
language : en
Publisher:
Release Date : 2000
A Real Time Method For Estimating Viscous Forebody Drag Coefficients written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Skin friction (Aerodynamics) categories.
A Real Time Method For Estimating Viscous Forebody Drag Coefficients
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Author : Stephen A. Whitmore
language : en
Publisher:
Release Date : 2000
A Real Time Method For Estimating Viscous Forebody Drag Coefficients written by Stephen A. Whitmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
The Aerodynamics Of Heavy Vehicles Trucks Buses And Trains
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Author : Rose McCallen
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-07-30
The Aerodynamics Of Heavy Vehicles Trucks Buses And Trains written by Rose McCallen and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-30 with Technology & Engineering categories.
It is our pleasure to present these proceedings from the United Engineering Foundation Conference on The Aerodynamics of Heavy Vehicles: Trucks, Buses and Trains held December 2-6, 2002, in Monterey, California. This Department of Energy, United Engineering Foundation, and industry sponsored conference brought together 90 leading engineering researchers from around the world to discuss the aerodynamic drag of heavy vehicles. Participants from national labs, academia, and industry, including truck manufacturers, discussed how computer simulation and experimental techniques could be used to design more fuel efficient trucks, buses, and trains. Conference topics included comparison of computational fluid dynamics calculations using both steady and unsteady Reynolds-averaged Navier-Stokes, large-eddy simulation, and hybrid turbulence models and experimental data obtained from the Department of Energy sponsored and other wind tunnel experiments. Advanced experimental techniques including three-dimensional particle image velocimetry were presented, along with their use in evaluating drag reduction devices. We would like to thank the UEF conference organizers for their dedication and quick response to sudden deadlines. In addition, we would like to thank all session chairs, the scientific advisory committee, authors, and reviewers for their many hours of dedicated effort that contributed to a successful conference and resulted in this document of the conference proceedings. We also gratefully acknowledge the support received from the United Engineering Foundation, the US Department of Energy, Lawrence Livermore National Laboratory, Volvo Trucks America, International Truck and Engine Corporation, and Freightliner LLC.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 2000
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Government publications categories.
38th Aerospace Sciences Meeting And Exhibit
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Author :
language : en
Publisher:
Release Date : 2000
38th Aerospace Sciences Meeting And Exhibit written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Aeronautics categories.
21st Aiaa Advanced Measurement And Ground Testing Technology Conference 00 2375 002527
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Author :
language : en
Publisher:
Release Date : 2000
21st Aiaa Advanced Measurement And Ground Testing Technology Conference 00 2375 002527 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Aerodynamics categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
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 1995 with Aeronautics categories.
Fundamentals Of Cavitation
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Author : Jean-Pierre Franc
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-22
Fundamentals Of Cavitation written by Jean-Pierre Franc and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-22 with Science categories.
This book treats cavitation, which is a unique phenomenon in the field of hyd- dynamics, although it can occur in any hydraulic machinery such as pumps, propellers, artificial hearts, and so forth. Cavitation is generated not only in water, but also in any kind of fluid, such as liquid hydrogen. The generation of cavitation can cause severe damage in hydraulic machinery. Therefore, the prevention of cavitation is an important concern for designers of hydraulic machinery. On the contrary, there is great potential to utilize cavitation in various important applications, such as environmental protection. There have been several books published on cavitation, including one by the same authors. This book differs from those previous ones, in that it is both more physical and more theoretical. Any theoretical explanation of the cavitation phenomenon is rather difficult, but the authors have succeeded in explaining it very well, and a reader can follow the equations easily. It is an advantagein reading this book to have some understanding of the physics of cavitation. Therefore, this book is not an introductory text, but a book for more advanced study. However, this does not mean that this book is too difficult for a beginner, because it explains the cavitation phenomenon using many figures. Therefore, even a beginner on cavitation can read and can understand what cavitation is. If the student studies through this book (with patience), he or she can become an expert on the physics of cavitation.
Technical Digest
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Author : Naval Surface Warfare Center (U.S.). Dahlgren Division
language : en
Publisher:
Release Date : 1998
Technical Digest written by Naval Surface Warfare Center (U.S.). Dahlgren Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Naval research categories.