Effect of geometrical features on the contra-rotating propeller hydrodynamic performances

Dublin Core

Title

Effect of geometrical features on the contra-rotating propeller hydrodynamic performances

Description

New contra-rotating four-bladed DTMB propeller configurations operating in open water are numerically studied to determine their hydrodynamic performances. The unsteady turbulent flow around propellers is modelled by RANS equations with Kω SST model then solved by a CFD code. The computational domain is divided in two blocks linked with a rotating interface. The obtained results show that thrust and efficiency of the contra-rotating (CRP) increase compared to the single propeller, leading to a significant reduction of the propeller diameter. The variation in axial spacing and angular displacement seems to have little effect on the CRP efficiency. The results also show that the thrust can be further improved by adopting a moderate negative twist angle of the rear propeller.
Keywords: CRP contra-rotating propeller, axial spacing, angular spacing, twist angle, CFD.

Creator

Bouregba, F.
Belkadi, M.
Aounallah, M.
Adjlout, L.

Source

Journal of Naval Architecture and Marine Engineering; Vol. 17 No. 2 (2020); 129-141
2070-8998
1813-8535

Publisher

Association of Naval Architects and Marine Engineers

Date

2020-12-26

Rights

Copyright (c) 2020 Journal of Naval Architecture and Marine Engineering

Relation

Format

application/pdf

Language

eng

Type

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

Identifier

Citation

F Bouregba. et al., Effect of geometrical features on the contra-rotating propeller hydrodynamic performances, Association of Naval Architects and Marine Engineers, 2020, accessed November 6, 2024, https://igi.indrastra.com/items/show/3318

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