References of "Lapy, Matthieu"
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See detailHydrodynamique et Architecture Navale
Hage, André; Rigo, Philippe ULg; Lapy, Matthieu ULg

in Journées scientifiques et techniques du CETMEF 2012 (2012, December 05)

State of art en matière d'hydrodynamique navale et architecture navale pour la navaigatio nfluviale

Detailed reference viewed: 71 (6 ULg)
See detailAir Cavity ship as a solution to reduce frictional resistance
Lapy, Matthieu ULg; Hage, André ULg

Conference (2012, November 06)

Frictional resistance is an important part of the total resistance of a ship, especially when the Froude number is small. There exists different ways to reduce it, like riblets, polymer injection, air ... [more ▼]

Frictional resistance is an important part of the total resistance of a ship, especially when the Froude number is small. There exists different ways to reduce it, like riblets, polymer injection, air lubrication and air cavity. The first two techniques are hard to implement for full-scale ships. The air lubrication is subjected to plenty of research for around twenty years and could lead to resistance reduction up to 80%. Unfortunately, full-scale tests do not present the same results. The principle of air cavity ships is quite different, in the sense that air is blocked under the hull. The system exists for more than 100 years, but does not seem to convince the naval architects, although it can reduce the resistance up to 20%. The problem is that it can increase the resistance. Better knowledge of the phenomena is then necessary. [less ▲]

Detailed reference viewed: 51 (5 ULg)