Journal of Fluid Mechanics

The flow near the bow of a steadily turning ship

Miguel Hiroo  Hirata a1
a1 COPPE, Universidade Federal do Rio de Janeiro, C.P. 1191-ZC-00, Rio de Janeiro 20.000, Brazil

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hirata mh   [Google Scholar] 


The flow near the bow of a steadily turning ship is analysed using a modified slender-body theory. The rate of change of flow quantities in the longitudinal (x) direction is assumed to be greater than that implied by ‘conventional’ slender-body theory. As a consequence some features of high Froude number flow are apparent which cannot be predicted by the ‘conventional’ theory. The modified slender-body theory proposed requires the solution of a two-dimensional Laplace equation (in y and z) but its free-surface condition still involves an x derivative. A Fourier-transform method is used to solve this problem. A simple bow configuration of constant draft is analysed and numerical results for the free-surface elevation are presented.

(Published Online March 29 2006)
(Received November 11 1974)