Effect of tip rake angle on the hydrodynamic characteristics and sound pressure level around the marine propeller. (3rd October 2018)

• Record Type: Journal Article
• Authors: Ghassemi, Hassan; Gorji, Mohsen; Mohammadi, Jalal
• Is Part Of: Ships and offshore structures. Volume 13:Number 7(2018)
• Page Start: 759
• Page End: 768
• Publication Date: 2018-10-03
• Subjects: DTMB4382 -- tip rake angle -- hydrodynamic characteristics -- sound pressure level; Ships -- Periodicals; Offshore structures -- Periodicals; Marine engineering -- Periodicals; Marine engineering -- Technological innovations -- Periodicals; Ocean engineering -- Periodicals; Ocean engineering -- Technological innovations -- Periodicals; 623.8
• DOI: 10.1080/17445302.2018.1457207
• Languages: English
• ISSNs: 1744-5302

Abstract

ABSTRACT: This paper presents the effect of the tip rake angle on the hydrodynamic characteristics and sound pressure level (SPL) around the ship propeller by Reynolds-Averaged Navier–Stokes solver. Tip rake angle may cause changes in tip vortex and hydrodynamic performance and noise level. The two-step Fflowcs Williams and Hawkings (FW-H) equations are used to calculate the pressure distribution, hydrodynamic characteristics as well as SPL at various points around the propeller. The DTMB4382 propeller is selected. The effects of the tip rake angle on the hydrodynamic and SPL around the propeller are investigated. Various numerical results such as SPL at different downstream points and different topside points of the propeller and hydrodynamic characteristics are presented and discussed. Main conclusion is found that when the positive or negative rake is increased the efficiency is slightly decreased and the SPL is also diminished.