doublet vortex clockwise and uniform flow
Stone Stability Under Non-uniform Flow- Sự ổn định của viên đá gia cố đáy dưới tác động của dòng chảy không đều
Ngày tải lên :
07/11/2012, 11:04
... ow conditions - uniform and non -uniform For non -uniform ow, it is important that the mobility parameter is dependent on the local hydrodynamic conditions (Hoand, 2005) Mosselman and Akkerman (1998) ... concept u C uniform flow = = = E gd r e d i ph g i ph ew v u i ph K - correction factors d = f g (u+ k ) hm d = g non -uniform flow = f (u,k) (?) g u K , or C e gfd t g d = uniform flow = f ... particles and vortexes form there This causes a pressure difference between the font and the back surface of the particle, forming the resistance F2 (Chien and Wan, 1999) The resultant of F1 and F2...
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Undaria pinnatifida Habitat Loss in Relation to Sea Urchin Grazing and Water Flow Conditions, and Their Restoration Effort in Ogatsu Bay, Japan
Ngày tải lên :
05/09/2013, 09:38
... seaweed and aquaculture Midori Press, Tokyo, pp 133 - 144 Turner, M G., Gardner, R H and ÓNeill R V (2004) Landscape ecology in theory and practice: Pattern and process, Nakagoshi, N and Hara, ... surveys of the water velocities at randomly selected ten U pinnatifida habitats and twenty unvegetated areas in Line and Line were conducted in September 2004 and August 2005 Each area for the ... from the bottom and thus, allowing the recovery of U pinnatifida and other non-encrusting macroalgae Both buoyed reefs were made of wood and their length was 1.0 m with 1.0 m width and 16 cm height...
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An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs
Ngày tải lên :
05/09/2013, 16:10
... Schabacker, J., and Boles, A., “Experimental and numerical study of developed flow and heat transfer in coolants with channels with 45 degree ribs”, Int Journal of Heat and fluid flow, 20, 311-319, ... belonging to the secondary flow and partly belonging to the main flow through the gap As a result of the presence of gap, the secondary flow along the rib joins the main flow to accelerate it which ... through the gap and hence the local turbulence At the same time a very small gap will also not allow sufficient amount of the secondary flow fluid to pass through it and thus the main flow could not...
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The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook
Ngày tải lên :
22/10/2013, 10:15
... THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW OVERVIEW The Department of Energy Fundamentals Handbook entitled Thermodynamics, Heat Transfer, and Fluid Flow was prepared as an information ... impact that their actions may have on the safe and reliable operation of facility components and systems The Thermodynamics, Heat Transfer, and Fluid Flow handbook consists of three modules that are ... entire subject of thermodynamics, heat transfer, and fluid flow would be impractical However, the Thermodynamics, Heat Transfer, and Fluid Flow handbook does present enough information to provide...
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Tài liệu Open channel hydraulics for engineers. Chapter 2 uniform flow docx
Ngày tải lên :
20/12/2013, 19:15
... Fig 2.2 Energy and hydraulic gradient in uniform- flow channel If the flow is uniform, the cross sections at points and must be constant Consequently, the velocity and the depth of flow must also ... 3D D 2D 2.3.3 Problems of uniform- flow computation The computation of uniform flow may be performed by the use of two equations: the continuity equation and a uniform- flow formula When the Manning ... bottom and rubble sides Stony bottom and weedy banks Cobble bottom and clean sides c Dragline-excavated or dredged No vegetation Light brush on banks d Rock cuts Smooth and uniform Jagged and irregular...
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Tài liệu Open channel hydraulics for engineers. Chapter 4 non uniform flow ppt
Ngày tải lên :
20/12/2013, 19:15
... varied flow subcritical downstream flow control overflow (critical depth) hc gradually varied flow rapid varied flow gradually varied flow rapid varied flow Fig 4.1 Examples of non -uniform flow ... subcritical and supercritical flows The backwater calculation is developed assuming: a non -uniform flow a steady flow that the flow is gradually varied, and that, at a given section, the flow ... 4.1.2 Accelerated and Retarded flow An idealized section of a reach of a channel with accelerated and retarded flow conditions is shown in Fig 4.2a and Fig 4.2b, respectively As flow accelerates,...
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Tài liệu Module 4: Managing Attribute Values Using Joins and Attribute Flow Rules pdf
Ngày tải lên :
21/12/2013, 19:15
... and Attribute Flow Rules 15 $ Establishing Attribute Flow Rules Topic Objective To identify important topics related to establishing attribute flow rules Lead-in To initiate and control the flow ... and Attribute Flow Rules 17 Establishing General Attribute Flow Rules Topic Objective Configure Attribute Flow To identify the process for establishing general attribute flow rules Specific Flow ... attribute flow rules and specific attribute flow rules? General attribute flow rules establish the default attribute flow for all attribute values managed by a management agent Specific attribute flow...
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Tài liệu FLUID-STRUCTURE INTERACTIONSSLENDER STRUCTURES AND AXIAL FLOW VOLUME 1 ppt
Ngày tải lên :
13/02/2014, 16:20
... pipes and cylinders in axial flow; see Chapters and in Volume fa) High Reynolds number flows; ideal flow theory If U is a characteristic flow velocity (e.g a mean flow velocity in the system) and ... (a) steady flow and (b) unsteady flow The former are then subdivided into ‘instabilities’ (i.e self-excited vibrations) and vortex- induced vibrations The latter are subdivided into: random, e.g ... axisymmetric flow past the body of revolution with flow velocity V , cos a, and (ii) the cross -flow around the body with flow velocity V , sin a (Ward 1955; Karamcheti 1966) Thus, defining $ = $1 42 and...
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Tài liệu Đề tài " Weak mixing for interval exchange transformations and translation flows " ppt
Ngày tải lên :
16/02/2014, 06:20
... will call (T, A) a uniform cocycle It is also possible to show that dim E s (x) = #{i, θi < 0} 644 ARTUR AVILA AND GIOVANNI FORNI lemma 2.2 Let (T, A) be a uniform cocycle and let ω(κ) = sup ... strictly positive for every J ∈ J and almost every x ∈ ∆, and depends continuously on J for almost 646 ARTUR AVILA AND GIOVANNI FORNI every x Thus, for every δ > and J ∈ J , there exists Cδ (J) ... ΩN , and < ρ < ρ0 (Z) so that (3.13) and (3.20) hold and let δ < 1/10 be so small that ρ ln Al (3.23) µ(∆l ) − ρµ( + ln + Al (2δ)ρ l∈ΩN \Z ∆l ) = α < 0, l∈Z (this is possible by (3.13)) and (3.24)...
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Tài liệu The relation between earnings and cash flows pdf
Ngày tải lên :
18/02/2014, 01:20
... cash flow changes and accrual changes; cross-correlation between accrual and cash flow changes; and cross-serial correlation between accrual changes and cash flow changes have predicted signs and ... relative abilities of earnings and operating cash flows to predict future operating cash flows and for the average time series properties of operating cash flows, accruals and earnings Section compares ... contract determines both the timing and amount of the cash inflows (and often related cash outflows) and the recognition of earnings The sales contract specifies when and under what conditions the...
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the effect of treaties on foreign direct investment: bilateral investment treaties, double taxation treaties, and investment flows doc
Ngày tải lên :
07/03/2014, 13:20
... investment flows Do BITs Really Work?: An Evaluation of Bilateral Investment Treaties and Their Grand Bargain 109 jeswald w salacuse and nicholas p sullivan Bilateral Investment Treaties and ... foreign direct investment flows 24 The Effect of Tax and Investment Treaties on Bilateral FDI Flows to Transition Economies 687 tom coupé, irina orlova and alexandre skiba Selected Bibliography ... domestic and international tax issues, and is the author of International Tax as International Law: U.S Tax Law and the International Tax Regime (2007) and U.S International Taxation: Cases and Materials...
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MICRO-ELECTRO-MECHANICAL- SYSTEMS (MEMS) AND FLUID FLOWS pptx
Ngày tải lên :
09/03/2014, 00:20
... paper, we first report and discuss the fundamental micro-fluidmechanics issues and then review flow sensing and control using MEMS 2.1 SIZE EFFECTS Ratio Between Surface Force and Body Force Length ... rate The F− ions and HF− ions are responsible for removing the PSG, and their diffusion is very likely to be retarded by the electric double layer 4.4 Flow Through Micro Nozzles Flow through a ... shear-stress sensor has a sensitivity of 100 mV/Pa and a bandwidth of 10 kHz and higher This type of micro sensor can also be integrated into a large array and can even form a flexible skin to be placed...
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Air Education and Training Command Cost and Capacity System: Implications for Organizational and Data Flow Changes ppt
Ngày tải lên :
15/03/2014, 20:20
... Training Level Users and Training Infrastructure Information Needs and Flows by Type and Level AETC Management Information Needs and Flows Cost Information Data Needs and Flows Capacity Information ... manacapi@ rand.org RAND Project AIR FORCE RAND Project AIR FORCE (PAF), a division of the RAND Corporation, is the U.S Air Force’s federally funded research and development center for studies and analyses ... the Air Education and Training Command (AETC/CV) and HQ Air Force Deputy Chief of Staff, Personnel (AF/DP) and conducted within the Manpower, Personnel, and Training Program of RAND Project AIR...
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Ultrafine and uniform silicon nanowires grown with zeolites
Ngày tải lên :
16/03/2014, 15:09
... diameter The net result is a very fine (1–5 nm in diameter) and uniform SiNW sheathed by a thick and uniform oxide layer (20–40 nm in diameter) and each SiNW has a ÔrootÕ in the zeolite, as shown in ... layer of the SiNWs ranges from 20 to 40 nm and is also quite uniform throughout the entire length of the wires A central Si core of 1.3 nm in diameter and a relative thick SiO2 outer layer of 20 ... these very fine and uniform SiNWs The growth of the SiNWs is similar to the previously described oxide-assisted growth mechanism [15] The SiO powders were firstly sublimated at 1250 °C and formed nanoclusters...
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Fundamentals of the finite element method for heat and fluid flow lewis, nithiarasu,seetharamu
Ngày tải lên :
17/03/2014, 13:53
... Fundamentals of the Finite Element Method for Heat and Fluid Flow Fundamentals of the Finite Element Method for Heat and Fluid Flow Roland W Lewis University of Wales Swansea, UK Perumal Nithiarasu ... filament and the gas; hg , the heat transfer coefficient between the gas and wall; hw , the heat transfer coefficient between the wall and ambient and is the emissivity The subscripts f, w, g and a ... quick-setting concrete, the effect of heat and mass transfer on building and building materials and also the effect of heat on nuclear containment, and so on An environmental engineer is concerned...
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Vorticity and incompressible flow majda, bertozzi
Ngày tải lên :
17/03/2014, 14:53
... Inviscid Vortex Methods 3D Inviscid -Vortex Methods Convergence of Inviscid -Vortex Methods Computational Performance of the 2D Inviscid -Vortex Method on a Simple Model Problem The Random -Vortex ... blank Vorticity and Incompressible Flow ANDREW J MAJDA New York University ANDREA L BERTOZZI Duke University PUBLISHED BY CAMBRIDGE UNIVERSITY PRESS (VIRTUAL PUBLISHING) FOR AND ON BEHALF OF ... of continuation of 1.5 Convection, Stretching, and Diffusion 13 solutions in Chaps and 4, the design of vortex methods in Chap 6, and the notion of vortex patches in Chap To continue the proof,...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 1 of 3
Ngày tải lên :
17/03/2014, 15:00
... Transfer, and Fluid Flow; Instrumentation and Control; Electrical Science; Material Science; Mechanical Science; Chemistry; Engineering Symbology, Prints, and Drawings; and Nuclear Physics and Reactor ... conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems This information will provide personnel with a foundation for understanding the basic operation ... Order No DE92019789 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility operating...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 2 of 3
Ngày tải lên :
17/03/2014, 15:00
... Transfer, and Fluid Flow; Instrumentation and Control; Electrical Science; Material Science; Mechanical Science; Chemistry; Engineering Symbology, Prints, and Drawings; and Nuclear Physics and Reactor ... conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems This information will provide personnel with a foundation for understanding the basic operation ... Order No DE92019790 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility operating...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 3 of 3
Ngày tải lên :
17/03/2014, 15:00
... 16 Rev Fluid Flow LAMINAR AND TURBULENT FLOW LAMINAR AND TURBULENT FLOW The characteristics of laminar and turbulent flow are very different To understand why turbulent or laminar flow is desirable ... and the degree of turbulence of the flow Flow Regimes All fluid flow is classified into one of two broad categories or regimes These two flow regimes are laminar flow and turbulent flow The flow ... is necessary to understand the characteristics of laminar and turbulent flow EO 1.9 DESCRIBE the characteristics and flow velocity profiles of laminar flow and turbulent flow EO 1.10 DEFINE the...
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