Flow‚ Turbulence and Combustion 63: 269–291‚ 1999. © 2000 Kluwer Academic Publishers. Printed in the Netherlands. 269 Approximate Wall Boundary Conditions in the Large-Eddy Simulation of High Reynolds Number Flow W. CABOT and P. MOIN Center for Turbulence Research‚ Stanford University‚ Bldg. 500‚ 488 Escondido Mall‚ Stanford‚ CA 94305-3030‚ U.S.A. Abstract. The near-wall regions of high Reynolds numbers turbulent flows must be modelled to treat many practical engineering and aeronautical
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1. On theoretical background of Gurney flap Nomenclature Cd = section drag coefficient ; Cl = section lift coefficient ; Cp = pressure coefficient; L = magnitude of lift (downforce); L/D = lift to drag ratio; Rec = Reynolds number based on chord; V0 b c fp Γ ρ = freestream velocity; = span of the foil; = wing chord; = principal frequency; = circulation; = density. 1.1 Overview The Gurney flap is a mechanically simple device consisting of a short strip‚ fitted perpendicular to the pressure surface
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any of the seven players cross the lobby without touching the raider he will be declared as "out". The raider is sent off the field if: • the raider takes a breath before returning. • the raider crosses a boundary line. • a part of the raider’s body touches the ground outside the boundary (except during a struggle with an opposing team member). Each time when a player is "out"‚ the opposing team earns a point. A team scores a bonus of two points‚ called a "lona"‚ if the entire opposing team is
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Spheres are known to have a distinct critical Reynolds number above which the flow on the upstream face of the sphere is fully turbulent causing the drag coefficient to drop dramatically. This is because the turbulent boundary layer results in separation further aft than a laminar boundary layer‚ thus producing a smaller wake. The critical Reynolds number for the three spheres was determined by examining the measured drag coefficient CDp as a function of Reynolds number. To understand the quality of
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basic sediment transport mechanism. The reader’s background should be a basic course in wave theory and fluid mechanics. Chapter 1 deals with fundamentals in fluid mechanics with emphasis on bed shear stress by currents‚ while Chapter 3 discusses wave boundary layer theory. They are both written with a view to sediment transport. Sediment transport in rivers‚ cross-shore and longshore are dealt with in Chapters 2‚ 4 and 5‚ respectively. It is not the intention of the book to give a broad review of the
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Volunteer for World Parnership Golf This article is mainly about the how we volunteered for the World Partnership Golf and what we gained from this event. We made a good decision after analyzing pros and cons of different options with a satisfactory outcome. To help people in poverty‚ this project gave us an opportunity to dedicate ourselves to doing something good to the society. In the end‚ I fulfilled my duty with my heart and soul with a terrific take-away lesson for team work. World Partnership
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11/19/2012 MARE 451 Senior Design Capstone Project 1 Fall 2012 | ------------------------------------------------- Brian Tiefenthaler ------------------------------------------------- Brian Tiefenthaler | MLP’s MARE 451 Sr. Design Tesla Turbine | | MLP’s MARE 451 Sr. Design Tesla Turbine | Table of Contents Duties and responsibilities Page 3 Discussion of Tesla Turbine Page 4 Brian’s Responsibilities Page 7 Drag
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1. Introduction 2. Basic Theory of System 3. Assessment of Wake Parameter 4. Validation of Design Parameters 5. Analysis of the Inlet Design Parameters 6. Numerical Analysis of the Inlet Duct 7. Conclusion Nomenclature References Notes Abstract The application of waterjets is rapidly growing and they are increasingly being chosen for propulsion in high-speed crafts. Waterjet as a propulsion system of a vessel is also favorable when it comes to maneuvering‚ appendage drag‚ draft and fuel
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Journal of Sound and Vibration (1995) 184(2)‚ 343–368 HIGH AMPLITUDE VORTEX-INDUCED PULSATIONS IN A GAS TRANSPORT SYSTEM P. C. K‚ M. C. A. M. P‚ A. H A. P. J. W Eindhoven University of Technology‚ W & S 1.53‚ P.O. Box 513‚ Eindhoven‚ The Netherlands A. I‚ G. R R. P University ‘La Sapienza’‚ Via Eudossiana 18‚ 00184 Rome‚ Italy J. C. B TPD/TNO‚ P.O. Box 155‚ 2600 AD Delft‚ The Netherlands (Received 17 January 1994‚ and in
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teams of six players are separated by a net. Each team tries to score points by getting the ball to land on the other team’s court‚ which measures 30 by 30 feet. A player on one of the teams begins a rally by serving the ball from behind the back boundary line of the court‚ over the net‚ and into the receiving team’s court. Each team may touch the ball up to 3 times but individual players may not touch the ball twice consecutively. The first two touches are used to set up for an attack. The first
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