کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1726814 1520770 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic interaction of breaking waves and inverted sailing yachts: Explaining the efficacy of mast height retention relative to vertical centre of gravity
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
پیش نمایش صفحه اول مقاله
Dynamic interaction of breaking waves and inverted sailing yachts: Explaining the efficacy of mast height retention relative to vertical centre of gravity
چکیده انگلیسی

The ability of a sailing yacht to re-right due to the effect of a breaking wave is investigated experimentally. Free and constrained physical models with varying mast height and centre of gravity were tested. To investigate the influence of retained mast height on sway force and roll moment, models were constrained by attachment to a force balance for sway motion tests in calm water and stationary tests in regular and breaking waves. Free model testing, with varying mast height and centre of gravity position, were carried out in breaking waves. For these tests, model motions in six degrees of freedom were measured using photogrammetry. The constrained tests showed that while the mast height had little effect on forces when stationary in waves it had a large effect when in sway motion. As models experience large sway motions when subject to a breaking wave the mast remnant plays a critical role in re-righting dynamics. This work demonstrates that re-righting probability is more dependent on mast height retention and wave characteristics than vertical centre of gravity. This conclusion has direct implications on re-righting safety assessment as the dominant design feature in most safety standards is the vertical centre of gravity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 35, Issues 17–18, December 2008, Pages 1759–1768
نویسندگان
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