کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8064904 1520677 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Detuning and wave breaking during nonlinear surface wave focusing
ترجمه فارسی عنوان
تعویض و شکست موج در طول موج غیرخطی تمرکز موج
کلمات کلیدی
غیر خطی، تعطیل شکستن موج، شکستن موقعیت، طیف، از بین بردن انرژی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی
Using an energy focusing technique, several transient wave trains were generated in a two-dimensional wave flume to investigate their nonlinear evolution. By increasing the initial wave steepness (S0), while all other parameters remained the same, non-breaking through breaking conditions were achieved. The experimental results demonstrated that the waves' initial steepness affected the focusing process significantly. As expected, the nonlinear effects on wave packets with a low initial steepness were very small. However, for cases with large initial steepness, nonlinearity increased causing the wave packet to focus and break prematurely, a “detuning” process. As a result of the detuning process more than one breaker may occur, and more importantly when this ensues, energy loss was altered. It is found that for S0<0.274, only one breaker occurred, and the energy loss increased with increased initial steepness. For larger steepness, two breakers occurred and the total energy loss remained nearly constant (~17%) as the initial steepness was increased. As the initial steepness was increased still further, a large plunging breaking was obtained with additional energy loss (4%). These results suggest that the “detuning” has a pronounced influence not only on the resulting wave field, but on the resulting energy loss.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 113, 1 February 2016, Pages 215-223
نویسندگان
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