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Title: Ship Motions Contribution to the Fatigue Life of a Pre-Swirl Stator
Authors: P.W. Wang;P.K. Liao;C.Y. Hsin;Y. Quéméner;C.W. Lin
Contributors: 國立臺灣海洋大學:系統工程暨造船係
Keywords: Pre-Swirl Stator;Fatigue;BEM;CFD
Date: 2016
Issue Date: 2018-06-29T02:13:31Z
Publisher: Proceedings of PRADS2016
Abstract: Abstract:This study evaluated the fatigue life of a 5-fin Pre-Swirl Stator
(PSS) fitted ahead of the propeller of an 80,000 DWT bulk
carrier. Specifically, this study considered the fatigue loads
exerted on the fins by the stern wake and the ship motion
induced velocity fields, neglecting the effect of the propeller
induced inflow. A Boundary Element Method (BEM) based on
the potential flow theory was employed to evaluate the loads
on the fins. As input for this method, the viscous wake flow
was produced by computational fluid dynamic simulations in
calm water, and the motion-induced velocity was derived from
potential flow based seakeeping analyses. Finally, finite element
analyses were carried out using the BEM pressure distribution
to extract the hot spot stress at the fin connection,
and to thereby assess the fatigue life of the PSS, which was
found to be significantly greater than 25 years.
Appears in Collections:[Department of Systems Engineering and Naval Architecture] Lecture & Seminar

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