RANS simulation of interceptor effect on hydrodynamic coefficients of longitudinal equations of motion of planing catamarans

Najafi, Amin; Alimirzazadeh, Siamak; Seif, Mohammad Saeed

doi:10.1007/s40430-014-0256-6

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…Several studies have demonstrated the effectiveness of installing interceptors on the HSPC's transom in reducing vertical hull motions and acceleration in wave conditions [80][81][82]. However, it should be noted that the efficiency of interceptors in wave conditions is influenced by hull speed and wave frequency, which can lead to a negative trim angle at certain wavelengths and speeds.…”

Section: Interceptormentioning

confidence: 99%

Safety Improvements for High-Speed Planing Craft Occupants: A Systematic Review

Roshan,

Dashtimanesh,

Kujala

2024

JMSE

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Moving fast by high-speed planing craft (HSPC) is advantageous for some special missions, though it causes severe hull vibrations and shocks that can transfer to the human body and increase health and comfort risks. This study reviews the current safety standards to avoid human safety risks affected by whole-body vibrations (WBVs), as well as the safety status of HSPC occupants. In addition, the efficiency of motion-reduction devices (trim tab and interceptor) and shock/vibration-mitigation devices (shock-mitigation seat) in improving the safety of HSPC occupants is examined according to existing documents. The research methodology was based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRIS-MA) method, and published papers in the Scholar, Scopus, and Web of Science databases were analyzed. Because most of these publications are academic research, issues of bias in the eligible publications were not of particular interest. During this systematic review, many gaps and challenges in current information on safety improvement devices were found that need to be addressed in future studies, such as a lack of information on motion-reduction devices and shock-mitigation seat performance in reducing lateral and fore-and-aft motions. Referring to these gaps and challenges can be valuable as a suggestion to improve current knowledge in research and reduce safety risks.

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Section: Interceptormentioning

confidence: 99%

Safety Improvements for High-Speed Planing Craft Occupants: A Systematic Review

Roshan,

Dashtimanesh,

Kujala

2024

JMSE

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“…In this research, it was demonstrated that at the high encounter frequency, this parameter has little effect on the added mass and damping of this vessel. 21 In the year 2016, Wang et al have controlled the longitudinal motions of Swath vessel. These researchers have modeled longitudinal motions of vessel using band theory and have used sliding mode control for motions control.…”

Section: Introductionmentioning

confidence: 99%

Experimental optimization of hydrodynamic performance of catamarans using hydrofoil element

Najafi¹,

Aliakbari²,

Hashemi³

2018

Proceedings of the Institution of Mechanical Engineers, Part M:

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Daily increase in fuel cost and also marine environment pollution tends designers and engineers to design and optimize based on reducing losses and energy consumption. Reduction of fuel consumption and marine environment pollution are categorized in high priority problems in design of new vessels and optimization of current ones. Using hydrofoil between two hulls is one of the best strategies in optimization cycle of fuel consumption of catamarans. HYSUCAT comes from ''Hydrofoil Supported Catamarans'' and stands for a vessel which is composed of a catamaran hull and hydrofoils mounted between two hulls. These hydrofoils tolerate part of hull weight in high speed and decrease wetted surface of vessel. This element reduces drag of vessel and consequently fuel consumption by decreasing the wetted surface. This research deals with determination of a suitable hydrofoil section to reduce drag and increase stability of a catamaran vessel using experimental data. Full-scale foils were constructed and mounted on a vessel in continue, and its performance was examined in sea tests. Determining the best section and also the most suitable position for mounting the foil is a novel study in the field of hydrodynamics of catamaran vessels.

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An experimental investigation of interceptors for a high speed hull

Avcı

Barlas

2019

International Journal of Naval Architecture and Ocean Engineeri

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RANS simulation of interceptor effect on hydrodynamic coefficients of longitudinal equations of motion of planing catamarans

Cited by 7 publications

References 23 publications

Safety Improvements for High-Speed Planing Craft Occupants: A Systematic Review

Safety Improvements for High-Speed Planing Craft Occupants: A Systematic Review

Experimental optimization of hydrodynamic performance of catamarans using hydrofoil element

An experimental investigation of interceptors for a high speed hull

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