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Automated marine propeller geometry generation of arbitrary configurations and a wake model for far field momentum prediction
Citation
Liu, P and Bose, N and Colbourne, B, Automated marine propeller geometry generation of arbitrary configurations and a wake model for far field momentum prediction, International Shipbuilding Progress, 48, (4) pp. 351-381. ISSN 0020-868X (2001) [Refereed Article]
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Copyright Statement
Copyright 2001 IOS Press
Official URL: http://iospress.metapress.com/content/0020-868x/
Abstract
This paper first describes procedures and methodologies to automatically produce
marine propeller geometry with optional auxiliary bodies such as nozzles, blockages
and rudders. This process is designed and implemented for a general boundary
element method (the panel method) to deal with both lifting body and non-lifting body
flows.
The generated geometry is represented by quadrilateral and triangular panels that
can be used by other mesh generation codes to produce 3D volumetric mesh for CFD
work. The vertices of these generated panels are set so that the normal of the surfaces
points inside the body. The order of the panels and their side indices are aligned for
numerical procedures such as differentiation of the perturbation doublet potential for
surface tangential velocities and Kutta condition at the trailing edge. A DXF file
format was also implemented as one of the output files that can be used for propeller
manufacturing via CNC and for commercial CFD codes that use geometry data
input.
Based on the near field wake modeling studies performed by the authors and previous
experimental investigations on far wake turbulent jet measurements, a far wake
model for a propeller panel method is implemented to enhance the capability of
predicting the velocities and momentum impact on the risers under a floating
production storage off-loading (FPSO) system during operation. This far wake model
consists of contraction wake (within one propeller diameter downstream), transition
wake (one to two diameters downstream), and inflation wake (two diameters beyond).
Near field velocity prediction of this far wake model is validated using previous LDV
measurement. Further experimental studies are scheduled for LDV/PIV measurement
up to 20-diameter downstream.
Item Details
Item Type: | Refereed Article |
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Keywords: | CAD, mesh generation, propeller manufacturing, panel method, wake modeling, FPSO positioning/operation |
Research Division: | Biological Sciences |
Research Group: | Ecology |
Research Field: | Marine and estuarine ecology (incl. marine ichthyology) |
Objective Division: | Environmental Management |
Objective Group: | Marine systems and management |
Objective Field: | Oceanic processes (excl. in the Antarctic and Southern Ocean) |
UTAS Author: | Bose, N (Professor Neil Bose) |
ID Code: | 47279 |
Year Published: | 2001 |
Deposited By: | Australian Maritime College |
Deposited On: | 2007-09-13 |
Last Modified: | 2012-08-03 |
Downloads: | 10 View Download Statistics |
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