CFD Analysis for Cavitation of a Marine Propeller

Das, H.N.

doi:10.3940/rina.hsmv.2008.05

Cited by 4 publications

(3 citation statements)

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“…Das et al 8 conducted a numerical simulation of PJP (with a 21bladed stator and 15-bladed rotor) based on standard k À e turbulence model, and the numerical results are in good agreement with the experimental results. Lu et al 9,10 studied the hydrodynamic performance of PJP (with an 11-bladed stator and nine-bladed rotor) based on SST (the shear-stress transport) k À x turbulence model.…”

Section: Introductionmentioning

confidence: 72%

Effect of the odd and even number of blades on the hydrodynamic performance of a pre-swirl pumpjet propulsor

et al. 2022

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A numerical study based on detached eddy simulations is conducted to investigate the effects of the odd and even number of rotor/stator blades, that is, nr/ ns, on the hydrodynamic performance of a pre-swirl pumpjet propulsor (PJP). In this paper, six PJPs, the PJP 6-4 ( ns– nr), 8-6, 10-8, 7-5, 9-7, and 11-9, are created. The hydrodynamic performance, the unsteady force of blades, and the wake structure of the PJPs are compared. The results show that the frequency of the fluctuating force of the whole rotor highly depends on the number or, more specifically, the parity of nr. When the parameter nr is the even number, it can be found that the total unsteady force of the rotor blades will be strengthened at the k-order stator-blades-passing frequency ([Formula: see text]). Moreover, it indicates that the superposition-enhancement coefficient (is defined as [Formula: see text]) at [Formula: see text] equals to nr, at least from the present tests. In terms of both the rotor and stator numbers are even, a phenomenon of the rotor–stator resonance occurs at [Formula: see text], where fn represents the hub rotational frequency. This work is expected to give some insight in the design of a PJP.

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Section: Introductionmentioning

confidence: 72%

Effect of the odd and even number of blades on the hydrodynamic performance of a pre-swirl pumpjet propulsor

et al. 2022

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“…[43]. The CFD-based analysis has been done for Cavitation of a Marine Propeller by Das [44]. There is a technique for hydro-elastic tailoring of flexible composite maritime propeller blades.…”

Section: Literature Reviewmentioning

confidence: 99%

Design Optimization of Marine Propeller using Elitist Particle Swarm Intelligence

Khan

Shoukat

Shah

et al. 2023

Preprint

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Marine transportation is still the primary source of global transportation. The propeller, which is a critical componentof the propulsion system, must be designed with multiple constraints and objectives to satisfy the need. Recent studies propose that utilizing an improved optimization algorithm and computational analysis would explore better designs than conventionalmethods. In the present study, Elitist Particle Swarm Optimization (EPSO) technique is implemented to optimize the design ofa marine propeller. Potsdam’s Conventional Propeller VP 1304 is used as a benchmark design case. Reynold’s Averaged NavierStokes equation based Computational Fluid Dynamics (CFD) along with Vortex Lattice Method (VLM) and Fluid StructureInteraction (FSI) model is used for computational analysis. The results obtained in this study are validated against the previously published experimental data. An optimized propeller design is proposed based on the Elitist Particle Swarm Optimization technique.It is observed that the proposed design shows improved open water performance for lower advance coefficient (J) valuesbased on the given constraints. It’s also observed that open water efficiency is improved by 7 percent for J=0.6 compared tothe original design. The one-way Fluid Structure Interaction analysis shows that the proposed design is structurally stable underopen water test conditions

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“…With the advancement of computer technology, the use of computational fluid dynamics (CFD) has become increasingly popular, leading to significant progress in simulating rotary machinery similar to pump-jet propellers. Das [4] proposed a design method for pump-jet pro based on rotating machinery design principles used in pumps. They also validated the capability of CFD analysis for pump-jet propellers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tip Clearance on the Cavitation Performance of High-Speed Pump-Jet Propeller

Gan,

Duan,

et al. 2023

Processes

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To investigate the impact of tip clearance variation on the cavitation performance of a high-speed pump-jet propeller, Fluent software was employed for simulation calculations. The study utilized the RNG k-ε turbulence model and ZGB cavitation, conducting three-dimensional numerical simulations under both steady and transient conditions. A pump-jet propeller with a rated speed of 20,000 r/min was used to set three kinds of clearance for simulation, and the simulation proved to be reliable by comparison with the experiment. Initially, the analysis examined the effect of tip clearance on cavitation characteristics and cavitation volume under steady-state conditions, while also studying the distribution patterns of cavitation. Subsequently, the radial force and pressure pulsation of the jet propeller are analyzed by FFT processing, aiming at the influence of tip clearance on the structural strength of the pump-jet propeller. Under the design conditions, the smaller tip clearance shows better performance, while the larger tip clearance shows stronger anti-cavitation ability than the smaller clearance. In addition, the greater the tip clearance, the greater the radial force and pressure pulsation, which will adversely affect the pump-jet structure. The research results provide some references for further research on the effect of high-speed pump-jet propeller structures on performance.

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CFD Analysis for Cavitation of a Marine Propeller

Cited by 4 publications

References 0 publications

Effect of the odd and even number of blades on the hydrodynamic performance of a pre-swirl pumpjet propulsor

Effect of the odd and even number of blades on the hydrodynamic performance of a pre-swirl pumpjet propulsor

Design Optimization of Marine Propeller using Elitist Particle Swarm Intelligence

Effect of Tip Clearance on the Cavitation Performance of High-Speed Pump-Jet Propeller

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