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Large eddy simulation of the flow past the DTMB5415 surface combatant hull with and without bilge keels

U. Svennberg ; Christer Fureby (Institutionen för sjöfart och marin teknik, Fartygs framdrivning och miljöpåverkan) ; M. Liefvendahl ; N. Alin
MARINE 2011 - Computational Methods in Marine Engineering IV (4th International Conference on Computational Methods in Marine Engineering, MARINE 2011; Lisbon; 28-30 September 2011) p. 605-616. (2011)
[Konferensbidrag, refereegranskat]

The flow around the DTMB5415 surface combatant hull with and without bilge keels is studied numerically by the use of a Large Eddy Simulation (LES) method. The main purpose for bilge keels is to reduce roll motions when operating in ocean waves. The flow resistance should at the same time be affected as little as possible. The computations presented here are for straight course in calm water conditions and show only a small change in the wake of the hull and there by a minimal effect on the resistance. The computations are made as a preparatory step before investigating other conditions, such as yaw angle.

Nyckelord: Large eddy simulation (LES), Naval hydrodynamics, Bilge keel, Flow resistance, Large Eddy simulation methods, Minimal effects, Roll motions, Surface combatant, Water conditions, Yaw angles, Computational methods, Marine engineering, Naval architecture, Water waves, Large eddy simulation



Denna post skapades 2012-05-31. Senast ändrad 2016-10-28.
CPL Pubid: 158288

 

Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik, Fartygs framdrivning och miljöpåverkan (2007-2011)

Ämnesområden

Farkostteknik

Chalmers infrastruktur