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Effect of deadrise angles on hydrodynamic performance of a stepped hull

Matveev, K. I

Stepped planning hulls are commonly used on fast planning boats and water-based aircraft, but numerical means for simulating their hydrodynamics are rather limited. In this study, a panel method involving hydrodynamic sources has been applied for modeling a stepped planning hull and accounting for water surface deformations in the air-ventilated cavity and surrounding water domain. Parametric calculations have been carried out for a selected hull with variable deadrise angles and at two speed regimes. Results are shown for the boat attitude, lift-drag ratio, and drag components. The variations of the wetted surfaces on two bodies of a stepped hull are also presented and related to variations in hydrodynamic characteristics of the hull.

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Effect of deadrise angles on hydrodynamic performance of a stepped hull

Matveev, K. I

Stepped planning hulls are commonly used on fast planning boats and water-based aircraft, but numerical means for simulating their hydrodynamics are rather limited. In this study, a panel method involving hydrodynamic sources has been applied for modeling a stepped planning hull and accounting for water surface deformations in the air-ventilated cavity and surrounding water domain. Parametric calculations have been carried out for a selected hull with variable deadrise angles and at two speed regimes. Results are shown for the boat attitude, lift-drag ratio, and drag components. The variations of the wetted surfaces on two bodies of a stepped hull are also presented and related to variations in hydrodynamic characteristics of the hull.

Effect of deadrise angles on hydrodynamic performance of a stepped hull

Matveev, K. I

Stepped planning hulls are commonly used on fast planning boats and water-based aircraft, but numerical means for simulating their hydrodynamics are rather limited. In this study, a panel method involving hydrodynamic sources has been applied for modeling a stepped planning hull and accounting for water surface deformations in the air-ventilated cavity and surrounding water domain. Parametric calculations have been carried out for a selected hull with variable deadrise angles and at two speed regimes. Results are shown for the boat attitude, lift-drag ratio, and drag components. The variations of the wetted surfaces on two bodies of a stepped hull are also presented and related to variations in hydrodynamic characteristics of the hull.

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Title:

Effect of deadrise angles on hydrodynamic performance of a stepped hull

Contributors:

Matveev, K. I (author) / Bari, G. S

Published in:

Proceedings of the Institution of Mechanical Engineers / M ; 230

Publication date:

2016

ISSN:

DOI:

https://doi.org/10.1177/1475090215613813

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Mathematical models , Fluid mechanics , Parameter estimation , Deformation , Velocity , Boats , Numerical analysis

Classification:

BKL: 55.40 Schiffstechnik, Schiffbau / 50.92 / 56.30 Wasserbau / 55.40 / 50.92 Meerestechnik / 56.30

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