کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5474624 1520660 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical and experimental investigation on the ballast flushing system
ترجمه فارسی عنوان
بررسی عددی و تجربی بر روی سیستم بلستر
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی
The ballast sediments deposit not only provide the breeding ground for the survival organisms, but also affect the weight balance of the ship and even accelerate the corrosion of the ballast tank. In this work the performance of a ballast water flushing system for the 138,000 m3 LNGC (Liquefied Natural Gas Carrier) double bottom cargo ship is studied. A simulation model of the ballast tank was made to conduct the numerical analysis. Besides, a scaled experimental setup was established on basis of the similarity principle. With different injecting velocities at the flushing inlet, the sediments distribution in the ballast tank is investigated and the energy consumption of the circulating pump is studied. The results show that by flushing the ballast water on the bottom, the sediments first accumulate at the far end, with the sediments volume fraction climbs up to 10-30%, before gradually getting removed over time. Further, higher inlet velocity leads to a more rapid decrease of average sediments proportion in the ballast tank over time, but the energy consumption in circulating pump significantly increases as well. The required power for this proposed ballast water flushing system is within the common range and thus applicable in the cargo ship.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 130, 15 January 2017, Pages 188-198
نویسندگان
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