233_add_Added Masses of Ship Structures.pdf - 222 5 Added Masses of Bodies Moving Close to a Free Surface Fig 5.45 Coefficient of added mass of a

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222 5 Added Masses of Bodies Moving Close to a Free Surface Fig. 5.45 Coefficient of added mass of a circular cylinder floating eccentrically in a channel of half-cylindrical shape under vertical impact ( left ). The coefficient of the added mass of a circular cylinder floating close to a vertical wall under a vertical impact ( right ) Fig. 5.46 The added mass of a circular cylinder floating near another cylinder, under a vertical impact (a) . Coefficients of the added mass of a circular cylinder floating in fluid of a finite depth under two different boundary conditions on free surface (b) λ 33 can be found from function f (r/l) := λ 33 33 shown in Fig. 5.45 b, where λ 33 = 0 . 5 ρπr 2 . The added mass λ 33 of a half-submerged cylinder of radius r floating on the free surface near a half-submerged cylinder of radius R is given by the function f (r/l,r/R) := λ 33 33 where λ 33 = 0 . 5 ρπr 2 ; l is the distance between the center of the first cylinder and the nearest point of the second cylinder.

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