Experimental and Numerical Investigation of Towing Resistance of the Innovative Pneumatic Life Raft

Burciu, Zbigniew; Abramowicz-Gerigk, Teresa; Jachowski, Jacek; Kornacka, Edyta; Wawrzusiszyn, Michał

doi:10.1515/pomr-2017-0048

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J Jachowski and E Książkiewicz1

Numerical Calculations Of Drag Force Of Life Raft1

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2021

2024

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Cited by 5 publications

(2 citation statements)

References 6 publications

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“…The concordance of the numerical calculations and the results of the experimental tests was high. The tank towing experiment and CFD calculations were performed using a full-scale prototype to eliminate any error of scale [1].…”

Section: J Jachowski and E Książkiewiczmentioning

confidence: 99%

Numerical Prediction of Pneumatic Life Raft Performance

Jachowski,

Ksiazkiewicz

2024

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Section: J Jachowski and E Książkiewiczmentioning

confidence: 99%

Numerical Prediction of Pneumatic Life Raft Performance

Jachowski,

Ksiazkiewicz

2024

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“…The most important assumptions accepted in the CFD modelling of the life raft are that the full scale of the life raft in three-dimensional flow simulations is used and the life raft is treated as a rigid body [1]. The computational domain shape with the given boundary conditions is presented in Fig.…”

Section: Numerical Calculations Of Drag Force Of Life Raftmentioning

confidence: 99%

Determination of the Aerodynamic Drag of Pneumatic Life Rafts as a Factor for Increasing the Reliability of Rescue Operations

Jachowski

Książkiewicz

Szwoch

2021

Polish Maritime Research

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Ensuring the safety of ship crews at sea is of the utmost importance. Life rafts are one of the basic components of any seagoing vessel and ensuring their stability is an important component of maritime research. This study concerns the determination of the aerodynamic drag coefficients of pneumatic life rafts in a full range of wind speed and directions. The drag coefficients are based on full-scale experimental studies and numerical calculations (computational fluid dynamics) carried out with Flow-3D software. Two types of life rafts are analysed in the numerical simulations, namely, a non-deformed raft and a raft deformed under the influence of wind pressure at a given flow velocity. The shape of the deformed pneumatic life raft is recreated on the basis of photographic documentation from experimental studies. The results of the numerical calculations are verified on the basis of full-scale flow experiments carried out at the Low Speed Wind Tunnel T-3 Laboratory at the Institute of Aviation in Warsaw. This study shows that there is a dependence of aerodynamic drag on the degree of deformation of the above-water part of the life raft, as well as the angle of the raft setting to the wind. In real water conditions, this angle depends mainly on the anchor point of the drift anchor and therefore should be considered at the design stage, which will directly reduce the wind leeway of the raft.

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Predicting drift characteristics of life rafts: Case study of field experiments in the South China Sea

Xia²,

Mu³

et al. 2022

Ocean Engineering

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Experimental and Numerical Investigation of Towing Resistance of the Innovative Pneumatic Life Raft

Abstract: The paper presents the experimental and numerical investigations of a novel design of a pneumatic

Cited by 5 publications

References 6 publications

Numerical Prediction of Pneumatic Life Raft Performance

Numerical Prediction of Pneumatic Life Raft Performance

Determination of the Aerodynamic Drag of Pneumatic Life Rafts as a Factor for Increasing the Reliability of Rescue Operations

Predicting drift characteristics of life rafts: Case study of field experiments in the South China Sea

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