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Experimental and numerical analysis of submarine mast surface wakes
Citation
Conway, AST and Binns, JR and Ranmuthugala, D and Renilson, M, Experimental and numerical analysis of submarine mast surface wakes, Proceedings of the Pacific International Maritime Conference 2015, 6-8 October, Sydney Exhibition Centre, Glebe Island, Sydney, pp. 1-12. (2015) [Refereed Conference Paper]
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Official URL: http://www.pacific2015.com.au/international-mariti...
Abstract
Submarines, due to operational reasons, are required to approach and pierce the surface
with vertically mounted masts such as periscopes and snorkels. These masts have the
potential to produce large wakes at the surface, which are susceptible to detection by radar,
sonar, or visually. This paper describes an experimental and numerical approach used to
replicate and analyse the plume profile generated by the submarine mast at typical speeds
used by submarines when operating periscopes.
The experimental analysis was conducted in the towing tank at the Australian Maritime
College using two different length cylinders ranging in diameter Froude numbers from 0.5 –
4.0, corresponding to typical submarine speeds up to 8 knots. The numerical analysis was
carried out using a Large Eddy Simulation (LES) model within the computational fluid
dynamics (CFD) software OpenFOAM. The first numerical analysis replicated the
experimental set up whilst further numerical simulations were conducted varying the mast
geometry.
It was found that the plume structure is generated from two separate flow regimes from the
cylinder, and both the experimental and numerical data showed a good correlation to
previously published data. Varying the configuration by using two smaller masts provided a
reduction of almost 20% in the plume height at 8 knots, whilst the use of streamlined bodies
resulted in a 75% reduction in bow wave height.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | LES, wake, cylinder, experimental, plume |
| Research Division: | Engineering |
| Research Group: | Maritime engineering |
| Research Field: | Marine engineering |
| Objective Division: | Defence |
| Objective Group: | Defence |
| Objective Field: | Maritime |
| UTAS Author: | Conway, AST (Dr Alexander Conway) |
| UTAS Author: | Binns, JR (Professor Jonathan Binns) |
| UTAS Author: | Ranmuthugala, D (Professor Dev Ranmuthugala) |
| ID Code: | 105242 |
| Year Published: | 2015 |
| Deposited By: | NC Maritime Engineering and Hydrodynamics |
| Deposited On: | 2015-12-16 |
| Last Modified: | 2018-04-05 |
| Downloads: | 15 View Download Statistics |
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