Computational Validation for Flow around a Marine Propeller Using Unstructured Mesh Based Navier-Stokes Solver

Abstract

Results of computational fluid dynamics validation for flow around a marine propeller are presented. Computations were performed for various advance ratios following experimental conditions. The objectives of the study are to propose and verify a hybrid mesh generation strategy and to validate computational results against experimental data with advanced computational fluid dynamics tools. Computational results for both global and local flow quantities are discussed and compared with experimental data. The predicted thrust and torque are in good agreement with the measured values. The limiting streamlines on and the pathlines off the propeller blade as well as the pressure distribution on the blade surface reproduce the physics of highly skewed marine propeller flow with tip vortex very well. The circumferentially averaged velocity components compare well with the measured values, while the velocity magnitude and turbulence kinetic energy in the highly concentrated tip vortex region are under-predicted. The overall results suggest that the present approach is practicable for actual propeller design procedures.

Numerical Simulation of Propeller Performance with an Inclined Shaft Arrangement

“…That is, how far the domain extends upstream, downstream, and radially. Previously, Rhee and Joshi [4] demonstrated that an extended domain 2*£> downstream gave the same results as a domain that extended only 0.72*D downstream. As previously stated, the domain used for this study did extend 2*D downstream, so dependency on domain extent was not studied.…”

Numerical Simulation of Propulsion and Cavitation Performance of Marine Propellers

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Cavitation Simulation of Highly Skewed Propellers

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