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A ship’s nominal wake fraction is a key parameter in the design of the marine propulsion system, i.e. the the marine propulsor and main engine. Determination of the wake fraction is commonly done through empirical formulas and / or based on model-scale experiments. However, a discrepancy exists between the model- and full-scale estimation results because of the way scaling is applied. Speed trials are conducted to estimate the full-scale nominal wake fraction. Results show the ability of the developed speed-trial methodology to provide an initial estimation of the full-scale nominal wake. However, comparison between the empirical, model-scale, and full-scale results fails to provide conclusive results. No real insight into the validity of the estimated full-scale nominal wake fraction could be established. However, the applied methodology is deemed to have value but additional research is required before further conclusions can be drawn.

Item Type:	Refereed Conference Paper
Keywords:	wake, bluefin, full-scale, speed-trials
Research Division:	Engineering
Research Group:	Maritime engineering
Research Field:	Marine engineering
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in engineering
UTAS Author:	Dubois, A (Dr Arno Dubois)
UTAS Author:	Binns, JR (Professor Jonathan Binns)
ID Code:	130378
Year Published:	2018
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2019-01-23
Last Modified:	2019-11-07
Downloads:	13 View Download Statistics