Development of scientific basis in design of propellers for ice-class carrier ships

Pustoshny, A.; Darchiev, G.; Фролова, Ю. В.

doi:10.24937/2542-2324-2019-1-387-7-19

Cited by 2 publications

(1 citation statement)

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“…Therefore, the propeller must provide sufficient thrust even at zero speed, to ensure the ice-breaking ability of the polar ship [3]. The zero-speed condition corresponds to the bollard pull condition, which is a high-load condition for the propeller and is prone to induce large-area cavitation on the propeller blade, leading to a sudden drop in the absorbed power and the generated thrust [4]. Once the thrust reduction occurs, the propeller hydrodynamics performance and the expected ice-breaking ability of the ship would be greatly affected.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of the propeller thrust reduction in bollard pull condition

Wen,

Liu,

et al. 2024

J. Phys.: Conf. Ser.

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The polar ships are often in bollard pull condition, which is prone to induce propeller cavitation and cause thrust reduction, weakening the ship’s ice-breaking ability. Based on the model tests and numerical simulations, this paper aims to investigate the propeller thrust reduction in the bollard pull condition. Firstly, the test of a self-designed ice class propeller under different cavitation numbers is carried out. The thrust reduction phenomenon is successfully captured and the hydrodynamic characteristics are obtained. Subsequently, the simulation based on Star-CCM+ is performed. It is found that the propeller thrust decreases almost linearly after the cavitation number reaches a certain threshold. When the cavitation number is equal to 0.25, the thrust decreases to 38.1% of that in the open water condition. By analyzing the mechanism of thrust reduction, the main reason is recognized that the average pressure of the blade face decreases greatly due to the influence of the cavitation on the blade back.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of the propeller thrust reduction in bollard pull condition

Wen,

Liu,

et al. 2024

J. Phys.: Conf. Ser.

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Особенности Проектирования Гребных Винтов Ледоколов И Судов Ледового Плавания

Kitaev¹,

Novikov²,

Turmov³

2020

ВИШ ДВФУ

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Представлены обобщенные результаты доковых осмотров судов Дальневосточного морского бассейна. Приведены примеры и выполнен анализ характерных повреждений гребных винтов ледоколов и судов ледового плавания, а также условий, при которых они были получены. Рассмотрены требования Российского морского регистра судоходства (РС) к проектированию ледовых гребных винтов, характеристика возможных нагрузок на их лопасти. Приведен пример расчета усталостной прочности винтов ледокола с учетом рекомендаций РС и Шведско-финских правил для судов ледового плавания (Finnish-Swedish Ice Class Rules). This paper covers summarized results of dock inspections of vessels in the Far Eastern Sea Basin. Examples of typical damages of screw propellers of icebreakers and ice navigation vessels as well as critical conditions are duly presented. Requirements of the Russian Maritime Register of Shipping (RMRS) for the design of ice propellers and parameters of active loads for their blades are fully considered. The example of fatigue strength calculation of icebreaker propeller is given subject to the requirements by RMRS and Finnish-Swedish Ice Class Rules.

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Development of scientific basis in design of propellers for ice-class carrier ships

Cited by 2 publications

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Experimental and numerical investigation of the propeller thrust reduction in bollard pull condition

Experimental and numerical investigation of the propeller thrust reduction in bollard pull condition

Особенности Проектирования Гребных Винтов Ледоколов И Судов Ледового Плавания

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