کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5473267 1520236 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An experimental investigation into the wave power extraction of a floating box-type breakwater with dual pneumatic chambers
ترجمه فارسی عنوان
یک تحقیق تجربی برای استخراج قدرت موج یک نوع موج شکنی با شناور با اتاق های پنوماتیک دوگانه
کلمات کلیدی
تحقیقات تجربی، استخراج قدرت موج، نوسان ستون آب موج شکن شناور،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی
The oscillating water column (OWC) device is in a leading position for wave power extraction but has not achieved fully commercial at the current stage. In addition to enhancing the OWC performance, installing OWCs on floating breakwaters, which owns the merits of both cost-sharing and offshore power supply, is a practicality with high economic viability. In this study, a series of wave-flume experiments were conducted in regular waves to examine the wave power extraction of a floating box-type breakwater with dual pneumatic chambers. The flow characteristics of the orifices used to simulate the PTOs was pre-calibrated through another series of experiments, so the power extraction in this study can be obtained with only the pressure measurement. The effects of wave period, chamber draft, water depth and arrangement of chambers on the power extraction were examined. Our experimental results showed that the power extraction was mainly due to the water column oscillation inside the chamber, and differentiation in the designed natural periods of dual chambers could widen the efficiency bandwidth of power extraction. The front chamber always played the main role in power extraction and its natural period should be designed against the dominating period of the wave spectrum; in contrast, the power extraction of the rear chamber was only a supplement and its natural period should be designed against longer waves which were more easily transmitted, thus a PTO of small power capacity maybe more realistic. It was also worth noting that the water column oscillation was more dependent on the wave period rather than controlled by the wave scattering under different water depths.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Ocean Research - Volume 67, September 2017, Pages 21-30
نویسندگان
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