Numerical simulation of propeller exciting force induced by milling-shape ice

Wang, C.; Li, X.; Chang, Xin; Xiong, Wei

doi:10.1016/j.ijnaoe.2018.06.004

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…The mesh independence study finds the right mesh resolution to get accurate results by reducing the simulation's errors. The accuracy of the result can be determined by comparing the results with existing experimental results as done by Almohammadi and Ingham et al, [19], Scuro and Angelo et al, [21], and Wang and Li et al, [20]. These researches have proven that having higher mesh resolution gives the best simulation results.…”

Section: Rezaeiha Andmentioning

confidence: 94%

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A CFD Simulation on the Performance of Slotted Propeller Design for Various Airfoil Configurations

Mohamed

Ravindran

Rajendran

2021

CFDL

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The usage of slots has gained renewed interest in aerospace, particularly on propeller design. Most of the works have focused on improving the aerodynamic performance and efficiency. Modern research on propeller design aims to design propellers with high thrust performance under low torque conditions without any weight penalty. Although research on slotted design has been done before, none has been done to understand its impact on different airfoils on the propeller blade. Thus, this study aims to provide extensive research on slotted propeller design with various airfoil of different properties such as high Reynolds number, low Reynolds number, symmetrical, asymmetrical high lift, and low drag. This work has been investigated using computational fluid dynamics method to predict propeller performance for a small-scale propeller. The slotted blade designs' performance is presented in terms of thrust coefficient, power coefficient, efficiency, and thrust to power ratio. Here, the slotted APC Slow Flyer propeller blade's performance has been investigated for diverse types of airfoils with the shape and position of the slot is fixed which is a square-shaped at 62.5% of the chord length. The flow simulations are performed through three-dimensional computational fluid dynamic software (ANSYS Fluent) to determine the thrust coefficient, power coefficient, efficiency, and thrust to power ratio measured in advancing flow conditions. Findings show that the slotted propeller design composed of symmetrical, high Reynolds number, high lift airfoils can benefit the most with slots' implementation. These improvements were 19.49%, 69.13%, 53.57% and 111.06% in terms of thrust, power, efficiency and trust to power ratio respectively.

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Section: Rezaeiha Andmentioning

confidence: 94%

“…The six-bladed fans have the best acoustic performance Mesh independency study Almohammadi and Ingham et al, [19] Seven different mesh resolutions Higher mesh resolutions give fewer errors Wang and Li et al, [20] Mesh resolution: 5.5 million, 13.8 million, 20.1 million…”

Section: Belamadi Andmentioning

confidence: 99%

A CFD Simulation on the Performance of Slotted Propeller Design for Various Airfoil Configurations

Mohamed

Ravindran

Rajendran

2021

CFDL

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“…The research [1][2][3][4][5] shows that the main vibration source of the ship is the vibration generated by the propeller cavitation and working in the uneven flow field. Propeller excitation force is mainly divided into bearing force and surface force.…”

Section: Introductionmentioning

confidence: 99%

Numerical Prediction of Pressure Fluctuation Included by Propeller on Hull Surface

Zhong,

Feng,

Qiu

et al. 2024

Frontiers in Artificial Intelligence and Applications

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In this paper, the DDES delayed separated vortex model is used to simulate the propeller excitation force of a pod, and the three-dimensional vortex structure characteristics and the propeller induced excitation force characteristics under the coupling effect of the hull pod are obtained. The calculation results show that the main characteristic frequencies of the pressure fluctuation on the surface of the pod are axial frequency and blade frequency, and there are four times of axial frequency at some measuring points. The leading edge of the davit and the propeller jet will have a strong interference effect, resulting in high blade frequency amplitude at the blade radius of the leading edge of the davit. The optimization of the davit structure is an effective way to reduce the induced excitation force of the pod propeller.

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“…The blades bear the excitation force and transmit it to the hull, resulting in fatigue damage to the main components of the ship, difficulties in onboard operations, equipment failure, poor crew comfort and reduced safety, etc. [1,2]. Therefore, the study of cavitation and the induced excitation force of ice-class propellers under ice blockage is of significance to ship and marine engineering.…”

Section: Introductionmentioning

confidence: 99%

“…The frequency of excitation moved to a higher order. Wang et al [2,11] established a numerical model of the propeller-induced excitation force under ice-propeller interactions using the overlapping grid method. They analyzed the changes in the bearing force of the propeller and fluctuating pressure around the propeller with different advance coefficients.…”

Section: Introductionmentioning

confidence: 99%

Cavitation and Induced Excitation Force of Ice-Class Propeller Blocked by Ice

Wang

et al. 2021

JMSE

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The presence of broken ice in the flow field around a propeller causes severe blade erosion, shafting, and hull vibration. This study investigates the performance of the propeller of a ship sailing in the polar regions under the propeller–ice non-contact condition. To this end, we construct a test platform for the propeller-induced excitation force due to ice blockage in a large circulating water channel. The hydrodynamic load of the propeller, and the cavitation and propeller-induced fluctuating pressure, were measured and observed by varying the cavitation number and ice–propeller axial distance under atmospheric pressure and decompression conditions. The results show that the fluctuation range of the blade load increases with a decrease in cavitation number and ice–propeller axial distance. The decrease in the cavitation number leads to broadband characteristics in the frequency-domain curves of the propeller thrust coefficient and blade-bearing force. Under the combined effects of ice blockage and proximity, propeller suction, the circumfluence zone around the ice, and the Pirouette effect, propeller–hull vortex cavitation is generated between the ice and propeller. The decrease in cavitation number leads to a sharp increase in the amplitude of the high-order frequency of the propeller-induced fluctuating pressure.

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Numerical simulation of propeller exciting force induced by milling-shape ice

Cited by 6 publications

References 8 publications

A CFD Simulation on the Performance of Slotted Propeller Design for Various Airfoil Configurations

A CFD Simulation on the Performance of Slotted Propeller Design for Various Airfoil Configurations

Numerical Prediction of Pressure Fluctuation Included by Propeller on Hull Surface

Cavitation and Induced Excitation Force of Ice-Class Propeller Blocked by Ice

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