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International Journal of Fluid Mechanics Research

Publication de 6  numéros par an

ISSN Imprimer: 2152-5102

ISSN En ligne: 2152-5110

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NUMERICAL PREDICTION OF FLOW THROUGH A P4119 PROPELLER USING A HYBRID MESH TECHNIQUE

Volume 47, Numéro 4, 2020, pp. 291-307
DOI: 10.1615/InterJFluidMechRes.2020029116
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RÉSUMÉ

A three-dimensional steady-state analysis of a three-bladed DTMB P4119 propeller is carried out with a hybrid mesh using the k-ε V2F turbulence model, and assuming the flow past the propeller to be laminar. The simulation is carried out for various advance ratios: J = 0.5, 0.833, 0.889, and 1.1. The predicted hydrodynamic coefficients, such as the thrust coefficient (Kt), torque coefficient (Kq), and coefficient of pressure (Cp), compare very well with experimental results for both the design as well as off-design advance ratios. Also, for the design advance ratio, both models predict the circumferentially averaged axial, radial, and tangential velocities very well. It is observed that the majority of the flow over the blade surface is laminar, and both the k-ε V2F and laminar models can capture the tip vortex very well. Hence, both models can be used to predict the hydrodynamic parameters effectively.

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