کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5473311 | 1520238 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of waves on cavitation and pressure pulses of a tanker with twin podded propulsion
ترجمه فارسی عنوان
اثر امواج بر روی حفره های حفره و فشار یک تانکر با موتور دوقلو تحت فشار
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کلمات کلیدی
حرکت در امواج، کاویتاسیون، پالس فشار پروانه دریایی، عملکرد پروانه در امواج، طراحی پروانه، نیروی محرکه دوقلو،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی دریا (اقیانوس)
چکیده انگلیسی
There is increasing interest in optimizing ships for the actual operating condition rather than just for calm water. In order to optimize the propeller designs for operations in waves, it is essential to study how the propeller performance is affected by operation in waves. The effect of various factors that influence the propeller is quantified in this paper using a 8000Â dwt chemical tanker equipped with twin-podded propulsion as a case vessel. Propeller performance in waves in terms of cavitation, pressure pulses, and efficiency is compared with the performance in calm water. The influence of wake variation, ship motions, RPM fluctuations and speed loss is studied. Substantial increase in cavitation and pressure pulses due to wake variation in the presence of waves is found. It is found that the effect of other factors is relatively small and easier to take into account as compared to wake variation. Therefore, considering the wake variation at least in the critical wave condition (where the wavelength is close to ship length) in addition to calm water wake is recommended in order to ensure that the optimized propeller performs well both in calm water and in waves.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Ocean Research - Volume 65, April 2017, Pages 206-218
Journal: Applied Ocean Research - Volume 65, April 2017, Pages 206-218
نویسندگان
Bhushan Taskar, Sverre Steen, Jonas Eriksson,