Odd M. Faltinsen's Hydrodynamics of High-Speed Marine Vehicles PDF

By Odd M. Faltinsen

ISBN-10: 0511137230

ISBN-13: 9780511137235

ISBN-10: 0521845688

ISBN-13: 9780521845687

This quantity considers hydrodynamic features of the 3 major different types of high-speed marine automobiles, i.e. vessels supported by means of both the submerged hull, an air cushion, or foils. (Submerged-hull-supported vessels contain planing and semi-displacement vessels.) The wave atmosphere, resistance, propulsion, seakeeping, sea rather a lot, and maneuvering are broadly coated in response to rational and simplified tools. hyperlinks to automated keep watch over and structural mechanics are emphasised. a close description of waterjet propulsion is given, and the impact of water intensity on wash, resistance, sinkage, and trim is mentioned. The publication includes many illustrations, examples, and workouts.

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Extra resources for Hydrodynamics of High-Speed Marine Vehicles

Sample text

If there is negligible turbulence intensity in the incident flow, this corresponds to Ux/ν = 2 · 105 . Rncrit can be found by a linear stability analysis (Schlichting 1979). 4 are called Tollmien-Schlichting (T/S) waves. As the amplitudes of the T/S waves grow, threedimensional instabilities occur. Fully turbulent flow occurs at the transition Reynolds number Rntr . If there is negligible turbulence intensity in the incident flow, Rntr is 3 · 106 . 3 is representative of a laminar boundary layer in the case of a 2D flow along a flat plate.

Laminar flow means that the flow is well organized in layers. It is steady when the incident velocity is steady. One can make the analogy between laminar flow and a school class marching orderly in a parade. Every pupil keeps his or her position relative to the others so that a clear structure with rows and columns appears. Then things get out of order and the pupils run everywhere without an apparent system except that they have a mean forward motion. This is like a turbulent flow. This analogy between hydrodynamics and human beings is used in simulating evacuation of passengers from passenger vessels during catastrophic events.

Because ∂ p/∂ x is zero for flow along a flat plate, the pressure does not vary along the sides of the control volume. The force on the control volume due to pressure is therefore zero. We use eqs. 7 to consider the viscous stresses on the control volume. There, a viscous stress τ11 = τxx = 2µ∂ u/∂ ¯ x acts on the vertical side parallel to the y-axis at x. This is negligible according to the boundary-layer theory. The only viscous stress acting on the control volume is at the side coinciding with the surface of the plate from the leading edge to x.

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Hydrodynamics of High-Speed Marine Vehicles by Odd M. Faltinsen


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