کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8063114 | 1520637 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study on motion responses of a moored rectangular cylinder under freak waves (I: Time-domain study)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی دریا (اقیانوس)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Extensive experiments on the motion responses of a rectangular cylinder under random and freak waves have been conducted in the present study. The effects of the relative wave height, relative period and freak wave parameters on the motion responses were investigated. Analysis in time-domain revealed that the freak wave parameter α1 has significant effect on the motion responses of the cylinder, especially for surge and heave. However, α2, α3, α4 have not such significant effect on the motion components. With α1â¯=â¯2-2.8, the maximum surge and heave under freak waves were 2.5 and 1.5 times, respectively, larger than those under irregular waves. In addition, the maximum pitch under freak waves was approximately 1.3 times of that under irregular waves. The difference in motion response under freak waves and irregular waves decreased with the increasing relative wave heights. With Hs/dâ¯=â¯0.03-0.1 and α1â¯=â¯2-2.2, the maximum surge and heave under freak waves were approximately 30-60% and 20-40%, respectively, larger than those under irregular waves. For the effect of the relative period, the critical surge, heave and pitch occur at period around Tp/T0heaveâ¯Ëâ¯1.0, 1.5, 2.0 and Tp/T0pitchâ¯Ëâ¯1, respectively. With the natural periods and α1â¯=â¯2-2.2, surge, heave and pitch under freak waves were approximately 44%, 40% and 30%, respectively, larger than those under irregular waves.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 153, 1 April 2018, Pages 268-281
Journal: Ocean Engineering - Volume 153, 1 April 2018, Pages 268-281
نویسندگان
Wenbo Pan, Ningchuan Zhang, Guoxing Huang, Xiangyu Ma,