practical ship hydrodynamics 2nd edition
Tài liệu Practical Ship Hydrodynamics doc
Ngày tải lên :
13/02/2014, 16:20
... Data Bertram, Volker Practical ship hydrodynamics Ships – Hydrodynamics I Title 623.80 12 Library of Congress Cataloguing in Publication Data Bertram, Volker Practical ship hydrodynamics / Volker ... full-scale ship Practical Ship Hydrodynamics Despite continuing research and standardization efforts, a certain degree of empiricism is still necessary, particularly in the model-to -ship correlation ... Trial tests of the built ship are an important prerequisite for the acceptance of the ship by the shipowner and are always specified in the contract between shipowner and shipyard The problem is...
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Practical Ship Hydrodynamics Volker Bertram pot
Ngày tải lên :
27/06/2014, 17:20
... Data Bertram, Volker Practical ship hydrodynamics Ships – Hydrodynamics I Title 623.80 12 Library of Congress Cataloguing in Publication Data Bertram, Volker Practical ship hydrodynamics / Volker ... full-scale ship Practical Ship Hydrodynamics Despite continuing research and standardization efforts, a certain degree of empiricism is still necessary, particularly in the model-to -ship correlation ... Trial tests of the built ship are an important prerequisite for the acceptance of the ship by the shipowner and are always specified in the contract between shipowner and shipyard The problem is...
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practical zendesk administration, 2nd edition
Ngày tải lên :
01/08/2014, 16:44
... www.it-ebooks.info www.it-ebooks.info SECOND EDITION Practical Zendesk Administration Stafford Vaughan and Anton de Young www.it-ebooks.info Practical Zendesk Administration, Second Edition by Stafford Vaughan ... October 2012: First Edition May 2014: Cover Designer: Randy Comer Interior Designer: David Futato Illustrator: Rebecca Demarest Second Edition Revision History for the Second Edition: 2014-05-09: ... www.it-ebooks.info Praise for Practical Zendesk Administration “In today’s ever-changing business world, sustaining your competitive advantage comes down to maintaining great customer relationships The Zendesk...
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Practical Ship Hydrodynamics Episode 1 ppt
Ngày tải lên :
13/08/2014, 09:20
... Data Bertram, Volker Practical ship hydrodynamics Ships – Hydrodynamics I Title 623.80 12 Library of Congress Cataloguing in Publication Data Bertram, Volker Practical ship hydrodynamics / Volker ... Volker Bertram Practical Ship Hydrodynamics Despite continuing research and standardization efforts, a certain degree of empiricism is still necessary, particularly in the model-to -ship correlation ... As s m Ð V2 Ð Am m D s m Ð As Ð Am Vs Vm Practical Ship Hydrodynamics This results in cs D cm , i.e the non-dimensional coefficient c is constant for both ship and model For same non-dimensional...
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Practical Ship Hydrodynamics Episode 2 pps
Ngày tải lên :
13/08/2014, 09:20
... period where shipyards performed the analyses in-house the pendulum swung the other way with shipyards now using almost exclusively outsourcing as the sensible option 22 Practical Ship Hydrodynamics ... methods have no practical relevance for ship flows The interested reader may find some introduction in Peyret and Taylor (1985) 1.4.3 Applications Practical CFD applications for ship flows concentrate ... result If only the aftbody is considered, then the inlet may be placed, e.g., amidships In this 28 Practical Ship Hydrodynamics case all unknowns must be specified from experiments (for validation...
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Practical Ship Hydrodynamics Episode 3 docx
Ngày tải lên :
13/08/2014, 09:20
... employed for ship flows, because they require very small time steps for the necessary very fine spatial discretization A popular implicit scheme is the Crank–Nicholson scheme 34 Practical Ship Hydrodynamics ... good choice for grid generation in ships, even though the interpolation between blocks is more complicated than for block-structured grids 36 Practical Ship Hydrodynamics ž Unstructured grids ... 32 Practical Ship Hydrodynamics R Grid spacing Fine (h) P R R Medium (2h) P Figure 1.5 Coarse P R Prolongation...
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Practical Ship Hydrodynamics Episode 4 docx
Ngày tải lên :
13/08/2014, 09:20
... ideal fluid theory Full ship forms have a higher viscous pressure resistance than slender ship forms 66 Practical Ship Hydrodynamics Pressure Velocity ž Wave resistance The ship creates a typical ... tests determine the resistance of the ship without propeller (and often also without other appendages; sometimes resistance tests are performed 70 Practical Ship Hydrodynamics for both the ‘naked’ ... effectively tested in open water Larger circulation tunnels also include ship models and thus testing the propeller in the ship wake The ship models are sometimes shortened to obtain a thinner boundary...
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Practical Ship Hydrodynamics Episode 5 doc
Ngày tải lên :
13/08/2014, 09:20
... from the ship 86 Practical Ship Hydrodynamics ž Open-boundary condition: waves generated by the ship pass unreflected any artificial boundary of the computational domain ž Equilibrium: the ship is ... 72 Practical Ship Hydrodynamics S is the wetted surface in calm water, Vs the ship speed The resistance coefficient of the ship is then determined as: cTs D cFs ... independent of Fn and Rn and the same for model and ship The form factor is determined by assuming: F4 cT D 1Ck C˛ n cF0 cF0 74 Practical Ship Hydrodynamics CT / CFo 1.4 1.3 1.2 1.1 (1+K) 1.0 Figure...
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Practical Ship Hydrodynamics Episode 6 pps
Ngày tải lên :
13/08/2014, 09:20
... kn, the ship has a total calm-water resistance of RT,O D 460 kN The viscosity of water is D 1.19 Ð 10 m2 /s and D 1025.9 kg/m3 96 Practical Ship Hydrodynamics What is the resistance of a ship with ... encounter frequency 106 Practical Ship Hydrodynamics the incident wave frequency ω An exception are short following seas which are passed by the ship The condition for the ship passing the waves ... Operational limits for ships (e.g for offshore supply vessels or helicopters landing on ships) Tools to predict ship seakeeping are: ž Model tests ž Full-scale measurements on ships at sea ž Computations...
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Practical Ship Hydrodynamics Episode 7 pot
Ngày tải lên :
13/08/2014, 09:20
... method 124 Practical Ship Hydrodynamics solutions based on multipole methods Today, usually two-dimensional panel methods are preferred due to their (slightly) higher accuracy for realistic ship geometries ... is atmospheric pressure Far away from the ship, the flow is undisturbed Waves generated by the ship radiate away from the ship Waves generated by the ship are not reflected at the artifical boundary ... the ship seakeeping is significantly nonlinear, there is little sense in investigating the ship in elementary waves, since these waves not appear in nature and the non-linear reaction of the ship...
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Practical Ship Hydrodynamics Episode 8 doc
Ngày tải lên :
13/08/2014, 09:20
... slamming for ships is a strongly three-dimensional phenomenon due to, e.g., pitch motion and cross-sections in the foreship changing rapidly in the longitudinal direction 144 Practical Ship Hydrodynamics ... ship This correction considers, e.g.: ž The ship usually operates in areas with not quite so strong seaways as given in Table 4.2 ž The ship tries to avoid particularly strong seaways ž The ship ... required computer resources, few really three-dimensional applications to ships have been presented 146 Practical Ship Hydrodynamics 4.6 Exercises: seakeeping Solutions to the exercises will be...
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Practical Ship Hydrodynamics Episode 9 ppt
Ngày tải lên :
13/08/2014, 09:20
... 152 Practical Ship Hydrodynamics Understanding ship manoeuvring and the related numerical and experimental tools is important for the designer for the choice of manoeuvring equipment of a ship ... going ships, side thrusts of 0.08–0.12 kN per square metre underwater lateral area are typical values These values relate to zero forward speed 166 Practical Ship Hydrodynamics of the ship Installed ... booklet on board ships in the IMO resolution A.601(15) (1987) (Provision and display of manoeuvring information on board ships) These can also be found in Brix (1993) 170 Practical Ship Hydrodynamics...
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Practical Ship Hydrodynamics Episode 10 doc
Ngày tải lên :
13/08/2014, 09:20
... 172 Practical Ship Hydrodynamics Pull-out manoeuvre After a turning circle with steady rate of turn the rudder is returned to midship If the ship is yaw stable, the rate ... values: – initial turning time ta : 1–1.5 ship length travel time – time to check starboard yaw ts : 0.5–2 ship travel length time (more for fast ships) Ship manoeuvring 173 20° Port d, y 10° 0° ... and usually not yield satisfactory agreement with the full-scale ship, because the too small model Reynolds 176 Practical Ship Hydrodynamics d = 0° + 35° − 35° Figure 5.10 Man-overboard manoeuvre...
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Practical Ship Hydrodynamics Episode 11 pdf
Ngày tải lên :
13/08/2014, 09:20
... 196 Practical Ship Hydrodynamics h=8m 10 m 12 m 14 m 16 m 18 m d = P − PV r V2 / 20 m h=6m 5m 4m 3m h=2m 1m h=0m 16 20 24 28 32 36 V (kn) Figure 5.21 Cavitation numbers as a function of the ship ... eff is theoretically twice the nominal value, in practice eff ³ 1.6 Ð geom To close 194 Practical Ship Hydrodynamics the gap between hull and rudder at least for small rudder angles υ – and thus ... half the ship s length in shallow water if the gap length e between rudder and hull tends to zero, as may be the case for twin-screw ships with a centre rudder This would decrease the ship s turning...
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Practical Ship Hydrodynamics Episode 12 pptx
Ngày tải lên :
13/08/2014, 09:20
... oscillating ship creates a vorticity The problem is similar to that of an oscillating airfoil The circulation is assumed constant within the ship Behind the ship, vorticity is shed downstream with ship ... xh y C arctan z r1 z r3 The derivation used: dx D ln x C C a2 x x h y /r3 zx z C x r2 214 Practical Ship Hydrodynamics x C a2 dx D x a2 x C a2 CC bx 1 dx D p arctan p a C bx ab ab for b > The numerical ... requires, however, closed bodies Then the velocities (and higher derivatives) can be 216 Practical Ship Hydrodynamics computed by simple numerical integration if the integrands are transformed...
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Practical Ship Hydrodynamics Episode 13 docx
Ngày tải lên :
13/08/2014, 09:20
... moments are used to adjust the position of the ship We assume small changes of the position of the ship z is the deflection of the ship (positive, if the ship surfaces) and  is the trim angle (positive ... discretization is given 250 Practical Ship Hydrodynamics C C B zw B zw A A Figure 7.4 (right) Partially submerged triangle with subtriangle ABC submerged (left) or surfaced for the trimmed ship by: z D msym ... z D zq and its mirror image at z D zq Otherwise, there is no change in the program 238 Practical Ship Hydrodynamics 7.2 Two-dimensional wave resistance problem The extension of the theory for...
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Practical Ship Hydrodynamics Episode 14 doc
Ngày tải lên :
13/08/2014, 09:20
... condition.) Far away from the ship, the disturbance caused by the ship vanishes Waves created by the ship move away from the ship For > 0.25, waves created by the ship propagate only downstream ... on ship speed Shipbuilder and Marine Engineer 70, pp 446–450 Lap, A J W (1954) Diagrams for determining the resistance of single screw ships Int Shipb Progr., p 179 Larsson, L (1997) CFD in ship ... Molland, A F (1979) Wind tunnel investigation of semi-balanced ship skeg rudders Naval Architect, pp 285–301 265 266 Practical Ship Hydrodynamics Hess, J L (1986) Review of the source panel technique...
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Tài liệu Practical RichFaces 2nd Edition docx
Ngày tải lên :
19/02/2014, 20:20
... frustrated and grow to dislike the technology That's an important reason we wrote this second edition of Practical RichFaces—to raise the level of understanding in the developer community so this ... “I didn’t know I could that!” www.it-ebooks.info xvi CHAPTER The Basics Welcome to Practical RichFaces, second edition In your hands (or on your computer/phone/tablet), you’ve got everything you ... be sent to the client (browser) JSF Is a Standard JSF is a part of the Java (and 5) Enterprise Edition (Java EE) platform This means that a bunch of companies and individuals got together and...
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