Analysis of the impact of turbulence models, grid topology, and flow characteristics on the precision of propeller's hydrodynamic performances predictions in open water tests
DOI:
https://doi.org/10.24866/2227-6858/2025-2/15-25Keywords:
marine propeller, INSEAN E779A, CFD, RANS, Ansys Fluent, turbulence models, open water testsAbstract
The effects of the turbulence model, grid topology, and flow characteristics on the accuracy of numerical prediction of propeller hydrodynamic performance were studied over a wide range of advance ratios. RANS equations were solved with Ansys Fluent to evaluate the hydrodynamic coefficients of the E779A propeller model in the open water tests. The validity of the numerical results was examined by a published experimental benchmark; the numerical-experimental comparison revealed a good agreement. Thrust coefficient, torque, and efficiency were presented and analysed for different turbulence models and grid topologies in both steady and unsteady flow. It is found that using the transition turbulence model in conjunction with the hexahedral grid guarantees a high level of accuracy of the propeller hydrodynamic performance in the open water tests.
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