Calculation of Magnus Forces on Axisymmetric Bodies at Small Angles of Attack with Incompressible Turbulent Boundary Layers PDF Download
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Author: Neal Tetervin
Publisher:
ISBN:
Category : Angle of attack (Aerodynamics)
Languages : en
Pages : 192
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Book Description
The Magnus force is found by adding the boundary layer displacement surface to the body and then calculating the force on the resulting non- axisymmetric body. The displacement surface is calculated by the simultaneous integration of a differential equation for a streamline, two partial-differential boundary layer integral-momentum equations with the boundary layer thickness and the tangent of the angle between the local direction of the surface friction and potential flow streamline as dependent variables, and a partial differential equation for the displacement surface thickness. The method is applied to a half-ellipsoid of fineness ratio 5 at 4 degrees angle of attack. Slender-body theory is used to calculate the force.
Author: Neal Tetervin
Publisher:
ISBN:
Category : Angle of attack (Aerodynamics)
Languages : en
Pages : 192
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Book Description
The Magnus force is found by adding the boundary layer displacement surface to the body and then calculating the force on the resulting non- axisymmetric body. The displacement surface is calculated by the simultaneous integration of a differential equation for a streamline, two partial-differential boundary layer integral-momentum equations with the boundary layer thickness and the tangent of the angle between the local direction of the surface friction and potential flow streamline as dependent variables, and a partial differential equation for the displacement surface thickness. The method is applied to a half-ellipsoid of fineness ratio 5 at 4 degrees angle of attack. Slender-body theory is used to calculate the force.
Author: William E. Buford
Publisher:
ISBN:
Category : Magnus effect
Languages : en
Pages : 60
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Book Description
Author: Frank J. Regan
Publisher:
ISBN:
Category : Body of revolution
Languages : en
Pages : 126
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Book Description
Base bleed is a technique whereby all or part of the boundary layer is 'bled' from the rear portion of a projectile to the base region. Passage from the model's surface to the base region is by means of concentric cylindrical passageways. The purpose of base bleed is to reduce the Magnus moment on overlong spinning bodies of revolution and to reduce the base drag. Both analytic and experimental results are presented. The boundary layer is represented by means of the momentum thickness.
Author: R. W. Kline
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 556
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Book Description
Author: Paul S. Lewis
Publisher: Nova Publishers
ISBN: 9781590338612
Category : Science
Languages : en
Pages : 260
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Book Description
Table of contents
Author: Communicable Disease Center (U.S.) Technology Branch
Publisher:
ISBN:
Category : Communicable diseases
Languages : en
Pages : 1124
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Book Description
Author: Robert K. Adair
Publisher: HarperCollins
ISBN: 0062407821
Category : Science
Languages : en
Pages : 199
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Book Description
Blending scientific fact and sports trivia, Robert Adair examines what a baseball or player in motion does-and why. How fast can a batted ball go? What effect do stitch patterns have on wind resistance? How far does a curve ball break? Who reaches first base faster after a bunt, a right- or left-handed batter? The answers are often surprising—and always illuminating. This newly revised third edition considers recent developments in the science of sport such as the neurophysiology of batting, bat vibration, and the character of the "sweet spot." Faster pitchers, longer hitters, and enclosed stadiums also get a good, hard scientific look to determine their effects on the game. Filled with anecdotes about famous players and incidents, The Physics of Baseball provides fans with fascinating insights into America's favorite pastime.
Author: Colin Crouch
Publisher:
ISBN: 9781781941331
Category : Chess
Languages : en
Pages : 0
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Book Description
Crouch studies Carlsen' s progress in recent years and demonstrates how he learned lessons from previous setbacks, turned weaknesses into strengths, losses into draws, and draws into wins.
Author: Akihiro Sasoh
Publisher: Springer
ISBN: 3319910205
Category : Technology & Engineering
Languages : en
Pages : 1188
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Book Description
This is the first volume of a two volume set which presents the results of the 31st International Symposium on Shock Waves (ISSW31), held in Nagoya, Japan in 2017. It was organized with support from the International Shock Wave Institute (ISWI), Shock Wave Research Society of Japan, School of Engineering of Nagoya University, and other societies, organizations, governments and industry. The ISSW31 focused on the following areas: Blast waves, chemical reacting flows, chemical kinetics, detonation and combustion, ignition, facilities, diagnostics, flow visualization, spectroscopy, numerical methods, shock waves in rarefied flows, shock waves in dense gases, shock waves in liquids, shock waves in solids, impact and compaction, supersonic jet, multiphase flow, plasmas, magnetohyrdrodynamics, propulsion, shock waves in internal flows, pseudo-shock wave and shock train, nozzle flow, re-entry gasdynamics, shock waves in space, Richtmyer-Meshkov instability, shock/boundary layer interaction, shock/vortex interaction, shock wave reflection/interaction, shock wave interaction with dusty media, shock wave interaction with granular media, shock wave interaction with porous media, shock wave interaction with obstacles, supersonic and hypersonic flows, sonic boom, shock wave focusing, safety against shock loading, shock waves for material processing, shock-like phenomena, and shock wave education. These proceedings contain the papers presented at the symposium and serve as a reference for the participants of the ISSW 31 and individuals interested in these fields.
Author: Frank J. Regan
Publisher:
ISBN:
Category : Ballistics
Languages : en
Pages : 122
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Book Description
The report presents the results of ballistics range and wind-tunnel measurements of the static force and moment and the pitch-damping, roll-damping and Magnus moments for a General Purpose 20-Millimeter Projectile. Data are presented for a Smooth and Basic configuration. These aerodynamic data are used in a special digital computer program to rapidly assess the stability of the projectiles over various mission profiles. The normal-force and pitching-moment derivatives are evaluated, theoretically, by Wood's method and compared with the measurements.
