Application of Nonlinear Turbulence Models for Marine Propulsors

Kaewkhiaw, Prachakon; Tiaple, Yodchai; Dechaumphai, Pramote; Juntasaro, Varangrat

doi:10.1115/1.4003564

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…With the improvement of computer performance, especially the continuous development of CFD computational fluid method considering viscous flow effect, the research method based on numerical simulation has gradually become the mainstream. JI Bin et al studied the cavitation flow of propeller by RANS method based on unstructured grid, gave the numerical results of marine propeller, and verified the calculation method with experimental data [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of cavitation characteristics of pod propulsor

Zou

Wu²,

Lu³

et al. 2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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In this paper, the CFD calculation method is used to calculate and analyze the cavitation characteristics of a pod propeller blade based on Schner-Sauer cavitation model, and the thrust coefficient, moment coefficient, efficiency, blade surface pressure and gas phase distribution characteristics of the propeller under different cavitation numbers are obtained. The results show that the thrust coefficient, torque coefficient and efficiency of the propeller are basically unchanged when the cavitation number is above 1.52, and the cavitation number is reduced to 1.16, and the propeller thrust coefficient changes little, However, the torque coefficient increases slightly, the efficiency decreases slightly, the cavitation number decreases to less than 0.46, the cavitation area covers the entire blade back surface, the area of the cavitation area on the blade surface and the right side of the cabin surface increases significantly, the propeller thrust, torque and efficiency drop sharply, and the propeller is in full cavitation state.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of cavitation characteristics of pod propulsor

Zou

Wu²,

Lu³

et al. 2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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“…After that, the computer performances are improved therefore the RANS CFD is carried out to analyze the propeller performances such as Kaewkhiaw et al (2011) studied the application of nonlinear turbulence models for marine propulsors. Kaewkhiaw and Ando (2014) simulated unsteady propeller performances with inclined shaft propeller arrangement by using CFD.…”

Section: Introductionmentioning

confidence: 99%

CFD investigation on steady and unsteady performances of contra-rotating propellers

Kaewkhiaw

2018

J. nav. arch. mar. engg.

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The realistic flow on each blade of the front and rear propellers with contra-rotating propellers (CRPs) are most complex because that consist the interaction forces with themselves and it affects to the actual efficiency of the propeller blades. The wake of CRPs at the gap between the front and rear propellers have influent to the variation of propeller performance for the front and rear propellers. So, this paper presented the numerical simulation of propeller performance on CRPs with steady method in the first. Second, it is applied to evaluate the propeller performance with unsteady method in time accuracy including investigating the wake on a transverse plane between the front and rear propellers and a transverse plane located downstream of the rear propeller. The wake was analyzed through velocity vector magnitude contours. The numerical simulations were conducted using the Reynolds Averaged Navier-Stokes (RANS). The calculation results have been compared the measurement data.

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“…It is also important for us to understand the forming mechanism of the cavitation. At present, the numerical simulation based on a viscid-flow theory is becoming more and more attractive in the prediction of propeller cavitation hydrodynamic performance by modifying cavitation model and turbulence model [2][3][4] . With an unstructured grid and k-ω turbulence model based on Navier-Stoker solver, the cavitation of propeller blade was studied by Shin H R [5] .…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Effect of Propellers Skew on Cavitation Performance

Zhu

2013

AMR

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The effect of propeller skew on cavitation distribution, thrust and the torque is studied numerically. With the hybrid grid strategy and the sliding mesh, the Unsteady Navier-Stokes (N-S) and the Bubble Dynamics equations were solved to predict the vapor volume fraction around ships propellers blades. The numerical predictions of the sheet and the tip vortex cavitation of the propeller E779A are in agreement with the results in other literature in general. For propeller models DTMB, the proper increase of the propeller skew angle may enhance the hydrodynamic performance.

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Application of Nonlinear Turbulence Models for Marine Propulsors

Cited by 5 publications

References 21 publications

Numerical simulation of cavitation characteristics of pod propulsor

Numerical simulation of cavitation characteristics of pod propulsor

CFD investigation on steady and unsteady performances of contra-rotating propellers

Numerical Study of the Effect of Propellers Skew on Cavitation Performance

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