Numerical study of resistance and form factor of high-speed catamarans
Numerical study of resistance and form factor of high-speed catamarans
Since the prediction of resistance of the full-scale ship mainly relies on extrapolation of form factor of the model, it is important to determine the form factor precisely. Nowadays, the computer performance has been developed, commercial CFD code with Reynolds-averaged Navier-Stokes Equations (RANS), which is widely accepted and used by many researchers is capable of determining resistance components. This paper presents the development and procedures for the prediction resistance components and form factor of displacement catamarans by using commercial CFD code, STAR CCM+, with SST k-ω turbulence model. The Wigley catamarans with three hull configurations including S/L = 0.2, 0.3 and 0.4 are investigated at Froude number between 0.2 and 0.8. Resistance components, which are total (CT), skin friction (CF), viscous (CV), residual (CR) and wave (CW) resistance, form factor (1+k), form resistance interference factor (β), wave resistance interference factor (τ) and wave elevation along the hull are estimated and validated against experiment retrieved from Insel (1992). The results show that CFD code with RANS equations is capable of estimating resistance components and demonstrates that form factor increases with speed (Fn).
11-22
Srinakaew, Sarawuth
94f81053-b6ab-4f21-b79c-05a86a350ae6
Taunton, Dominic
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Hudson, Dominic
3814e08b-1993-4e78-b5a4-2598c40af8e7
27 June 2019
Srinakaew, Sarawuth
94f81053-b6ab-4f21-b79c-05a86a350ae6
Taunton, Dominic
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Hudson, Dominic
3814e08b-1993-4e78-b5a4-2598c40af8e7
Srinakaew, Sarawuth, Taunton, Dominic and Hudson, Dominic
(2019)
Numerical study of resistance and form factor of high-speed catamarans.
Journal of Research and Applications in Mechanical Engineering, 7 (1), .
(doi:10.14456/jrame.2019.2).
Abstract
Since the prediction of resistance of the full-scale ship mainly relies on extrapolation of form factor of the model, it is important to determine the form factor precisely. Nowadays, the computer performance has been developed, commercial CFD code with Reynolds-averaged Navier-Stokes Equations (RANS), which is widely accepted and used by many researchers is capable of determining resistance components. This paper presents the development and procedures for the prediction resistance components and form factor of displacement catamarans by using commercial CFD code, STAR CCM+, with SST k-ω turbulence model. The Wigley catamarans with three hull configurations including S/L = 0.2, 0.3 and 0.4 are investigated at Froude number between 0.2 and 0.8. Resistance components, which are total (CT), skin friction (CF), viscous (CV), residual (CR) and wave (CW) resistance, form factor (1+k), form resistance interference factor (β), wave resistance interference factor (τ) and wave elevation along the hull are estimated and validated against experiment retrieved from Insel (1992). The results show that CFD code with RANS equations is capable of estimating resistance components and demonstrates that form factor increases with speed (Fn).
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Submitted date: 25 February 2019
Accepted/In Press date: 7 May 2019
Published date: 27 June 2019
Identifiers
Local EPrints ID: 432708
URI: http://eprints.soton.ac.uk/id/eprint/432708
ISSN: 2229-2152
PURE UUID: ffe9e3da-8fd1-4ad7-9152-1fa897a7ea75
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Date deposited: 24 Jul 2019 16:30
Last modified: 16 Mar 2024 03:02
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Author:
Sarawuth Srinakaew
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