Practical Ship Hydrodynamics Episode 10 doc

... t a : 1–1.5 ship length travel time – time to check starboard yaw t s : 0.5–2 ship travel length time (more for fast ships) 176 Practical Ship Hydrodynamics d = 0° −35° +35° Figure 5 .10 Man-overboard ... offsets given in Table 5.4 172 Practical Ship Hydrodynamics 3. Pull-out manoeuvre After a turning circle with steady rate of turn the rudder is returned to midship. If the...

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. 32 Practical Ship Hydrodynamics R R P P Grid ... Poisson 36 Practical Ship Hydrodynamics ž Unstructured grids Unstructured grids allow the largest flexibility in grid generation, but require far more effort...

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... model is kept on 52 Practical Ship Hydrodynamics 6′ 2 6′ 2 6′ 2 K T K Q h h 10 . K Q K T J Figure 2.11 Influence of cavitation on propeller characteristics 0 5 10 15 20 25 30 °C 100 0 2000 3000 4000 N/m 2 Water ... 66 Practical Ship Hydrodynamics ž Wave resistance The ship creates a typical wave system which contributes to the total resistance. ... velocity components) Ship...

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... basins and shipyards. Exam- ples are Table 3.1 and: c A D 0.35 10 3  2 ÐL pp Ð 10 6 c A D 0.11 ÐR n Ð 10 9  2.1  a 2  a C 0.62 with a D max0.6, minC B , 0.8 84 Practical Ship Hydrodynamics The ... 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 gener...

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... distributions Section 4.4.6 treated ship reactions in stationary seaway. This chapter will cover probability distributions of ship reactions r during periods T with 142 Practical Ship Hydrodynamics However, ... as sketched. The pontoon has L D 100 m, B D 20 m, D D 10 m, m p D 10 7 kg. The load at the derrick has mass m l D 10 6 kg. The height of the derrick over deck is 10...

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... 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 ... integration: f 1 D  S pn 1 dS f 2 D  S pn 2 dS 236 250 Practical Ship Hydrodynamics C C B B A A z w z w Figure 7.4 Partially submerged triangle with subtriangle ABC submer...

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... school ‘CFD for ship and offshore design’, WEGEMT, London Tanizawa, K. and Bertram, V. (1998). Slamming. Handbuch der Werften XXIV, Hansa-Verlag, pp. 191– 210 254 Practical Ship Hydrodynamics g ... surface condition.) 6. Far away from the ship, the disturbance caused by the ship vanishes. 7. Waves created by the ship move away from the ship. For >0.25, waves created by the...

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... 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 Bertram 6 Practical Ship Hydrodynamics This ... Data Bertram, Volker Practical ship hydrodynamics 1. Ships – Hydrodynamics I. Title 623.8 0 12 Library of Congress Cataloguing in Publication Data Bertram, Volker...

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... dedicated 26 Practical Ship Hydrodynamics The centres of the innermost cells should lie within a distance from the wall where the logarithmic law of the wall function applies, i.e. 100 <y C , 100 0. However, ... 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 appli...

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... c A D 0.35 10 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 ... 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 ap...

Ngày tải lên: 13/08/2014, 09:20