Comparison of Ducted and Non-Ducted Ship Propellers with Constraints Consideration Using Genetic Algorithm

چکیده

In recent years, in spite of progressing in the ship propulsion system, many problems are required to work in order to gain highest performance. Optimization of propeller system, as the most important and applicable in this type of systems is of special importance. In many vessels, due to their certain conditions design, ducted propeller is used. Genetic algorithm is a powerful method for finding all parameters in a design with multiple objectives. Therefore, considering various aspects of design, we can use this algorithm for designing propellers. In this paper, GA method is applied for two purpose; hydrodynamic efficiency and vibration consideration, for optimized design of ducted propellers by applying Ka-series with nozzle NO.19A. The results from the ducted propeller design are also compared with the results obtained from the B-series propeller design.

کلیدواژه‌ها


عنوان مقاله [English]

مقایسه پروانه نازلدار و بدون نازل در کشتی ها با در نظر گرفتن قیدها به‌روش الگوریتم ژنتیک

چکیده [English]

در سالهای اخیر، با وجود توسعه سیستمهای رانش کشتی ها، مسائل زیادی در این سیستم های رانش بمنظور بهبود عملکرد و کارآیی انجام شده است. در بسیاری از کشتی ها جهت افزایش تراست، استفاده از پروانه نازلدار ترجیح داده می شود. مسئله بهینه سازی در سیستم پروانه کشتیها خیلی حائز اهمیت است. روش الگوریتم ژنتیک یکی از روشهای قدرتمند در طراحی پروانه است که برای سیستم های که تعداد پارامترها زیاد و توابع هدف چند بعدی باشند مورد تاکید می باشد. در این مقاله، روش الگوریتم ژنتیک جهت مقایسه و بهینه سازی پروانه نازلدار و بدون نازل جهت افزایش راندمان و کاهش ارتعاش استفاده شده است. نتایج و محاسبات این دو نوع پروانه طراحی شده نسبت به هم مقایسه شده اند.

کلیدواژه‌ها [English]

  • الگوریتم ژنتیک- پروانه نازلدار بهینه- راندمان- ارتعاش
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