Practical Ship Hydrodynamics Episode 8 doc

... = 0 .8 H = 0 .8 1.0 1 .8 0.6 0.4 0.2 H = 2.2 1 .8 1.4 1.2 1.0 0 .8 0.6 0.4 0.2 1.0 0.5 0 1.0 0.5 0 0.6 0.4 0.2 0 1.2 1.0 0 .8 0.6 0.4 0.2 0 0.4 0 .8 w 2 B / (2 g ) w 2 B / (2 g ) 1.2 0.4 0 .8 1.2 w 2 B ... by 150 Practical Ship Hydrodynamics A z denotes the ratio of amplitude of the radiated waves and the motion ampli- tude: A 2 z D jhj 2 ju 3 j 2 D ω 3 e g 2 n 33 1.5 1 .8...

Ngày tải lên: 13/08/2014, 09:20

... diagram −10 C Q * 2.6 1.6 1.2 0 .8 0.4 0 −0.4 −0 .8 −1.2 −1.6 0° 40° 80 ° 120° 160° 200° 240° 280 ° 320° 36 0° P / D = 1.6 1.4 1.2 1.0 0 .8 0.6 C T * h C T * P / D = 1.6 1.2 1.0 0 .8 0.6 1.4 −10 C Q * , ... D 40 Practical Ship Hydrodynamics The force T is made non-dimensional by the propeller disk area times the stagnation pressure based on the circumferential speed, omitting...

Ngày tải lên: 13/08/2014, 09:20

... 66 Practical Ship Hydrodynamics ž Wave resistance The ship creates a typical wave system which contributes to the total resistance. ... singularities on the image panels. An image for the source that 64 Practical Ship Hydrodynamics Schneekluth and Bertram (19 98) give several empirical formulae to estimate w in simple design approaches. ... transformed into polynomial expression...

Ngày tải lên: 13/08/2014, 09:20

... 0.7 0 .8 V 2 /( g . H ) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 .8 0.9 √ A m / H 10% 9 8 7 6 5 4 3 2 1% 0.1% Figure 3.10 Percentage loss of speed in shallow water (Lackenby (1963)) 74 Practical Ship Hydrodynamics 0 ... for model and ship. The form factor is determined by assuming: c T c F0 D 1 C k C ˛ F 4 n c F0 86 Practical Ship Hydrodynamics ž Open-boundary condition: waves genera...

Ngày tải lên: 13/08/2014, 09:20

... 1. 28 1.16 1. 18 1.21 50 1.20 1.17 1.17 1.30 1. 08 1.06 1. 08 60 1.13 1.13 1.07 1.14 1.00 0.96 0.97 70 1.06 1. 08 1.01 1.04 0.94 0.90 0.90 80 0. 98 1.03 0.95 0.96 0.93 0.90 0 .87 90 0 .89 0.96 0 .88 0 .87 ... 0.0536 0.0965 0. 083 00 0. 088 24 0. 081 14 0.6000 0.0 480 0.0533 0.0377 0.0766 0.06340 0.07606 0.066 58 0.7000 0.0263 0.0357 0.0239 0.0546 0.04500 0.06106 0.0 484 2 0 .80 00 0....

Ngày tải lên: 13/08/2014, 09:20

... 2 48 Practical Ship Hydrodynamics process: if the error ε iC1 in iteration step i C 1 is larger than the error ... 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 Â is the trim angle (positive ... gz T D 1 2 V 2 with g D 9 .81 m/s 2 . This condition is n...

Ngày tải lên: 13/08/2014, 09:20

... theory of ship motions. Adv. Appl. Mech. 18, pp. 222– 283 Pereira, R. (1 988 ). Simulation nichtlinearer Seegangslasten, Schiffstechnik 35, pp. 173–193 Peyret, R. and Taylor, T. D. (1 985 ). Computational ... V. (19 98) . Schiffe im Seegang. Handbuch der Werften XXIV,Hansa- Verlag, pp. 151– 189 SSC (1995). Hydrodynamic impact on displacement ship hulls. Ship Structure Committee, SSC-...

Ngày tải lên: 13/08/2014, 09:20

... Data Bertram, Volker Practical ship hydrodynamics 1. Ships – Hydrodynamics I. Title 623 .8 0 12 Library of Congress Cataloguing in Publication Data Bertram, Volker. Practical ship hydrodynamics / Volker ... containerships and ro-ro ships model tests are often performed as part of the regular design process, as IMO regulations require Practical Ship Hydrodynamics Volker Be...

Ngày tải lên: 13/08/2014, 09:20

... methods have no practical relevance for ship flows. The interested reader may find some introduction in Peyret and Taylor (1 985 ). 1.4.3 Applications Practical CFD applications for ship flows concentrate ... debate over turbulence modelling for engineering applications, but for ship flows we will have to wait at least 20 Practical Ship Hydrodynamics full-scale will become availab...

Ngày tải lên: 13/08/2014, 09:20

... 96 Practical Ship Hydrodynamics What is the resistance of a ship with L pp D 150 m if the ship is geometri- cally and dynamically similar to the base ship and the approach ... Ð10 3 . 6. A ship of 150 m length sails with 15 kn on water of 12 m depth. It experi- ences a dynamic sinkage amidships of 1 m and a trim (bow immerses) of 106 Practical Ship Hydrodynamics the ... p...

Ngày tải lên: 13/08/2014, 09:20