Added Masses of Interacting Bodies

Korotkin, Alexandr I.

doi:10.1007/978-1-4020-9432-3_4

Cited by 5 publications

(6 citation statements)

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“…where C 33 = ρ g ∫ B ( x ) dx , C 55 = ρ g ∇ ( GM true¯ L + LC F 2 C 33 ) ≈ ρ g S 11 + ρ g ∇ ( KB true¯ − KG true¯ ) , S 11 = ∫ x 2 B ( x ) dx , C 33 and C 55 are related to tons per centimeter and moment to trim on centimeter , respectively; A 33 and A 55 can be approximated by some empirical formula. 17…”

Section: Empirical Formula On Approximating the Added Resistance In Hmentioning

confidence: 99%

Approximation of the added resistance of ships with small draft or in ballast condition by empirical formula

Liu

Papanikolaou

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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An attempt was made to extend and further tune the existing formula for approximating the added resistance in head seas to cover a wider range of speed and to account the impact of loading conditions; a new parameter based on B/T was introduced after conducting extensive parametric study to capture the influence of draft on the added resistance; the trim effect has also been investigated; Furthermore, the draft effect on the added resistance due to diffraction is further tuned and simplified. The derived formula uses only a few input, including only some ship dimensions to yield an estimation of the added resistance of ships in regular waves. Numerical results show that the added resistance of various ships in head seas at low speeds, as well as the added resistance of tankers in ballast condition and cruise ships, can be properly captured by the new formula. Hence, it meets the demand of fast examination of the minimum power; it can also be used in the early design stage of a ship for power estimation.

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Section: Empirical Formula On Approximating the Added Resistance In Hmentioning

confidence: 99%

Approximation of the added resistance of ships with small draft or in ballast condition by empirical formula

Liu

Papanikolaou

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…75, and 1 . 00, the added mass of water are M am /M 0 = 0.594, 0.558, 0.527, and 0.500, respectively 21 — M0=43ρπa3 is the mass of a sphere with radius a filled with water. A flatter end-effector was associated with a larger added mass, which could explain the larger vibration amplitude of the plate.…”

Section: Resultsmentioning

confidence: 99%

“…The dependence of the vibration amplitude on the end-effector oblateness could be attributed to the added mass, M am , induced by the vertical motion of the end-effector. For oblate spheroids with oblateness b/a = 0.25, 0.50, 0.75, and 1.00, the added mass of water are M am /M 0 = 0.594, 0.558, 0.527, and 0.500, respectively 21 -M 0 ¼ 4 3 ρπa 3 is the mass of a sphere with radius a filled with water. A flatter end-effector was associated with a larger added mass, which could explain the larger vibration amplitude of the plate.…”

Section: Structural Responsementioning

confidence: 99%

An experimental methodology to study impulsive hydrodynamic loading of air-backed composite plates

Zhang

Guo

Porfiri

2023

Jnl of Sandwich Structures & Materials

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Sandwich composites in marine vessels are frequently exposed to impulsive hydrodynamic loading during operation in extreme environments. The response of sandwich composites to impulsive hydrodynamic loading has yet to be fully investigated due to the lack of full-field, simultaneous measurement techniques. Here, we propose an experimental framework for the study of the dynamic response of sandwich composites to hydrodynamic loading. We focus on a fiber-reinforced plate positioned at the air-water interface subjected to impulsive hydrodynamic loading. The interaction between the plate and the water is studied through a combined visualization technique based on particle image velocimetry (PIV) and digital image correlation (DIC). The velocity and pressure fields are quantified through PIV, and, simultaneously, the out-of-plane vibration of the plate is inferred from DIC. Repeated measurements were conducted for a range of hydrodynamic loading conditions. Our experiments unveiled a rich multimodal response that is strongly coupled with the flow physics. This work constitutes a first step toward an experimental understanding of fluid-structure interaction of air-backed sandwich composites.

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“…The added mass coefficients for a circular cylinder and a sphere are given as and , respectively, by Batchelor (1967). For a streamlined wedge of width and length , the added mass coefficient for the wedge is estimated as in this study (Korotkin 2008).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Boussinesq and non-Boussinesq gravity currents propagating on unbounded uniform slopes in the deceleration phase

Dai

Huang

2021

J. Fluid Mech.

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Added Masses of Interacting Bodies

Cited by 5 publications

References 0 publications

Approximation of the added resistance of ships with small draft or in ballast condition by empirical formula

Approximation of the added resistance of ships with small draft or in ballast condition by empirical formula

An experimental methodology to study impulsive hydrodynamic loading of air-backed composite plates

Boussinesq and non-Boussinesq gravity currents propagating on unbounded uniform slopes in the deceleration phase

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