Unsteady Numerical Simulations Of Subsonic Flow Over A Projectile With Jet Interaction
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Unsteady Numerical Simulations Of Subsonic Flow Over A Projectile With Jet Interaction
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Author : Jabaraj Sahu
language : en
Publisher:
Release Date : 2003
Unsteady Numerical Simulations Of Subsonic Flow Over A Projectile With Jet Interaction written by Jabaraj Sahu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Aerodynamics categories.
This report describes a computational study undertaken to consider the aerodynamic effect of synthetic jets as a means to provide the control authority needed to maneuver a projectile at low subsonic speeds. The time-accurate Navier-Stokes computational technique has been used to obtain numerical solutions for the unsteady jet interaction flow field for a projectile at a subsonic speed, Mach = 0.11, and several angles of attack from O deg to 4 deg. Qualitative flow field features show the interaction of the time dependent jet with the free stream flow. Numerical results show the effect of the jet on the flow field, surface pressures and aerodynamic coefficients. Unsteady numerical results have been obtained for a two-dimensional jet flow and compared with experimental data for validation. The same unsteady jet modeling technique has been applied to a subsonic projectile. These numerical results are being assessed to determine if synthetic jets can be used to provide the control authority needed for maneuvering munitions to hit the targets with precision.
Unsteady Numerical Simulations Of Subsonic Flow Over A Projectile With Jet Interaction
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Author :
language : en
Publisher:
Release Date : 2003
Unsteady Numerical Simulations Of Subsonic Flow Over A Projectile With Jet Interaction written by 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.
This report describes a computational study undertaken to consider the aerodynamic effect of synthetic jets as a means to provide the control authority needed to maneuver a projectile at low subsonic speeds. The time-accurate Navier-Stokes computational technique has been used to obtain numerical solutions for the unsteady jet interaction flow field for a projectile at a subsonic speed, Mach = 0.11, and several angles of attack from O deg to 4 deg. Qualitative flow field features show the interaction of the time dependent jet with the free stream flow. Numerical results show the effect of the jet on the flow field, surface pressures and aerodynamic coefficients. Unsteady numerical results have been obtained for a two-dimensional jet flow and compared with experimental data for validation. The same unsteady jet modeling technique has been applied to a subsonic projectile. These numerical results are being assessed to determine if synthetic jets can be used to provide the control authority needed for maneuvering munitions to hit the targets with precision.
Unsteady Flow Computations Of A Finned Body In Supersonic Flight
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Author : Jabaraj Sahu
language : en
Publisher:
Release Date : 2007
Unsteady Flow Computations Of A Finned Body In Supersonic Flight written by Jabaraj Sahu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Aerodynamics, Supersonic categories.
This report describes a multidisciplinary computational study undertaken to compute the flight trajectories and simultaneously predict the unsteady free flight aerodynamics of a finned projectile at supersonic speeds with the use of an advanced unstructured time-accurate Navier-Stokes computational technique. Actual flight trajectories are computed with an advanced coupled computational fluid dynamics (CFD)-rigid body dynamics (RBD) technique. In addition, our goal is to be able to extract the aerodynamic coefficients from these fully coupled time-accurate CFD-RBD computations. Computed positions and orientations of the projectile have been compared with actual data measured from free flight tests and are found to be generally in good agreement. Unsteady numerical results obtained from the coupled method and unstructured grids show the flow field, the extracted aerodynamic forces and moments, and the flight trajectories of the projectile. Aerodynamic coefficients such as the dynamic derivatives have been obtained with a separate unsteady time-accurate CFD approach and have been compared with the extracted aerodynamic coefficients from the fully coupled dynamic simulations.
Parallel Computational Fluid Dynamics 2004
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Author : Gabriel Winter
language : en
Publisher: Elsevier
Release Date : 2005-07-12
Parallel Computational Fluid Dynamics 2004 written by Gabriel Winter and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-07-12 with Computers categories.
Parallel CFD 2004, the sixteenth international conference on Parallel Computational Fluid Dynamics and other modern scientific domains, has been held since May 24th till May 27th, 2004 in Las Palmas de Gran Canaria, Spain. The specialized, high-level Parallel CFD conferences are organised on travelling locations all over the world, yearly because of multidisciplinary subject of parallel CFD and its rapidly evolving nature.The conference featured 8 invited lectures, 3 Mini Symposia, contributed papers and one Tutorial & Short Course. More than 80 multi-disciplinary presentations of the Parallel CFD had been presented, with participants from 17 countries. The sessions involved contributed papers on many diverse subjects including turbulence, complex flows, unstructured and adaptive grids, industrial applications, developments in software tools and environments as parallel optimization tools. This Book presents an up-to-date overview of the state of the art in parallel computational fluid dynamics.- Report on current research in the field.- Researchers around the world are included.- Subject is important to all interested in solving large fluid dynamics problems.- It is of interest to researchers in computer science, engineering and physical sciences.- It is an interdisciplinary activity. Contributions include scientists with a variety of backgrounds.- It is an area which is rapidly changing.
Parallel Computational Fluid Dynamics 2007
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Author : Ismail H. Tuncer
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-04-21
Parallel Computational Fluid Dynamics 2007 written by Ismail H. Tuncer 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 2009-04-21 with Mathematics categories.
At the 19th Annual Conference on Parallel Computational Fluid Dynamics held in Antalya, Turkey, in May 2007, the most recent developments and implementations of large-scale and grid computing were presented. This book, comprised of the invited and selected papers of this conference, details those advances, which are of particular interest to CFD and CFD-related communities. It also offers the results related to applications of various scientific and engineering problems involving flows and flow-related topics. Intended for CFD researchers and graduate students, this book is a state-of-the-art presentation of the relevant methodology and implementation techniques of large-scale computing.
Time Accurate Computations Of Free Flight Aerodynamics Of A Spinning Projectile With And Without Flow Control
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Author : Jabaraj Sahu
language : en
Publisher:
Release Date : 2006
Time Accurate Computations Of Free Flight Aerodynamics Of A Spinning Projectile With And Without Flow Control written by Jabaraj Sahu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Aerodynamics categories.
This report describes a new multi-disciplinary computational study undertaken to compute the flight trajectories and simultaneously predict the unsteady free flight aerodynamics of a spinning projectile configuration with and without aerodynamic flow control. Actual flight trajectories are computed with an advanced coupled computational fluid dynamics (CFD)-rigid body dynamics (RBD) technique. An advanced time-accurate Navier-Stokes computational technique has been used in CFD to compute the unsteady aerodynamics associated with the free flight of the spinning projectile at subsonic speeds. Computed positions and orientations of the projectile have been compared with actual data measured from free flight tests and are found to be generally in good agreement. The same advanced coupled procedure has been used to compute the aerodynamics of the spinning projectile with flow control with the use of a synthetic microjet. Unsteady numerical results obtained from the coupled method show the flow field, the aerodynamic forces and moments, and the flight trajectories of the projectile.
Aiaa Aerospace Sciences Meeting And Exhibit 42nd
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Author :
language : en
Publisher:
Release Date : 2004
Aiaa Aerospace Sciences Meeting And Exhibit 42nd written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Aeronautics categories.
Aiaa Journal
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Author : American Institute of Aeronautics and Astronautics
language : en
Publisher:
Release Date : 2007
Aiaa Journal written by American Institute of Aeronautics and Astronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Aeronautics categories.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1948
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Mechanics, Applied 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.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.