Experimental measurement of the nearfield longitudinal wake profiles of a high-speed prismatic planing hull
Experimental measurement of the nearfield longitudinal wake profiles of a high-speed prismatic planing hull
This study details an extensive investigation into the nearfield longitudinal wake profiles of a high-speed planing hull. Developing understanding this flow is benaficial to the designers of stepped hulls in determining how the forebody’s wake intersects with the afterbody. As no experimental data was available, a novel small-scale model-testing programme was undertaken, measuring Centreline (CL) and Quarter Beam (QB) nearfield longitudinal wake profiles, as well as the forces. The nearfield wake profile was found to exhibit trends in agreement with the findings of studies investigating the mid and far-field wake. The results of this experimental work are provided in full as validation data. Savitsky’s Wake Equations and the Linear Wake Assumption are then assessed to determine the level of confidence with which they may be used to model this flow. Savitsky’s Wake Equations displayed a surprising level of accuracy whereas the Linear Wake Assumption was invalid for the conditions investigated.
102 - 128
Gray-Stephens, Angus
ce856437-8c7a-45bd-8818-b5043e6a86c8
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
Day, Sandy
2487042b-f8a4-49b3-b08b-6c9753d6214d
Gray-Stephens, Angus
ce856437-8c7a-45bd-8818-b5043e6a86c8
Tezdogan, Tahsin
7e7328e2-4185-4052-8e9a-53fd81c98909
Day, Sandy
2487042b-f8a4-49b3-b08b-6c9753d6214d
Gray-Stephens, Angus, Tezdogan, Tahsin and Day, Sandy
(2020)
Experimental measurement of the nearfield longitudinal wake profiles of a high-speed prismatic planing hull.
Ship Technology Research, .
(doi:10.1080/09377255.2020.1836552).
Abstract
This study details an extensive investigation into the nearfield longitudinal wake profiles of a high-speed planing hull. Developing understanding this flow is benaficial to the designers of stepped hulls in determining how the forebody’s wake intersects with the afterbody. As no experimental data was available, a novel small-scale model-testing programme was undertaken, measuring Centreline (CL) and Quarter Beam (QB) nearfield longitudinal wake profiles, as well as the forces. The nearfield wake profile was found to exhibit trends in agreement with the findings of studies investigating the mid and far-field wake. The results of this experimental work are provided in full as validation data. Savitsky’s Wake Equations and the Linear Wake Assumption are then assessed to determine the level of confidence with which they may be used to model this flow. Savitsky’s Wake Equations displayed a surprising level of accuracy whereas the Linear Wake Assumption was invalid for the conditions investigated.
Text
Experimental measurement of the nearfield longitudinal wake profiles of a high speed prismatic planing hull
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Accepted/In Press date: 7 October 2020
e-pub ahead of print date: 28 October 2020
Identifiers
Local EPrints ID: 473902
URI: http://eprints.soton.ac.uk/id/eprint/473902
PURE UUID: afe79338-47a3-413f-a0e8-6532ac0f3777
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Date deposited: 02 Feb 2023 17:46
Last modified: 17 Mar 2024 04:18
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Author:
Angus Gray-Stephens
Author:
Tahsin Tezdogan
Author:
Sandy Day
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