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بررسی پدیده کاویتاسیون و انتشار نویز در پروانههای رانش دریایی | ||
دوفصلنامه مهندسی شناورهای تندرو | ||
دوره 22، شماره 63، اسفند 1402، صفحه 3-17 اصل مقاله (1.67 M) | ||
نوع مقاله: مقاله مروری | ||
نویسندگان | ||
محمدحسین قائدشرف* 1؛ کامین صابری زاد1؛ وحید آئینی2؛ سیدحسین خوش دل هاشمی3 | ||
1گروه مهندسی مکانیک دانشگاه صنعتی مالک اشتر-اصفهان | ||
2دانشگاه فنی و حرفه ای شماره یک پسران (شهید مفتح همدان) | ||
3گروه مهندسی مکانیک، دانشگاه دریانوردی و علوم دریایی، چابهار | ||
تاریخ دریافت: 20 شهریور 1402، تاریخ بازنگری: 16 بهمن 1403، تاریخ پذیرش: 19 بهمن 1402 | ||
چکیده | ||
پروانه های دریایی اعضای مهم و حیاتی هستند که ارتباط میان موتور شناور و آب را برقرار میکنند و قسمت اعظم توان تولیدشده توسط آنها به حرکت روبهجلو شناور تبدیل میشود. پدیده کاویتاسیون یکی از مسائل مهم در طراحی پروانه شناور است و از آن می توان به عنوان معیاری جهت طراحی نام برد زیرا در صورت وقوع این پدیده ناخواسته ضمن کاهش مزایای آکوستیکی پروانه کشتی دچار فرسودگی می شود و در برخی موارد صدمات جبران ناپذیری می بیند. در طراحی شناورها نویز باعث ایجاد محدودیتهای نسبتا مختلفی می گردد که این محدودیت ها در دو حوزه مورد بحث قرار میگیرند، نخست تاثیر نویز بر روی سنسورها و سامانه های سلاح های خودی و دوم تاثیر این نویز در اطراف کشتی است که یکی از عوامل شناسایی توسط سامانه های شناسایی دشمن است. در شناورهای زیرسطحی مهمترین پارامتر در طراحی پروانه فاکتور میزان اختفا و کاهش سطح نویز انتشاری می باشد. ورتکس نوک پره پروانه را می توان یکی از قویترین منابع تولید نویز، کاهش تراست و راندمان و عامل ارتعاشات القایی روی بدنه معرفی کرد که با بهینه سازی نوک پره میزان سطح نویز را می توان تا حد مطلوبی کاهش داد. لذا بایستی فاکتورهای هندسی تاثیر گذار بر روی هندسه نوک پره برای رسیدن به این مهم بهینه گردند. در این پژوهش سعی بر این است که پدیده کاویتاسیون معرفی و معایب آن بررسی شود. | ||
کلیدواژهها | ||
پروانه؛ نیروی رانش؛ کاویتاسیون؛ آکوستیک؛ شناور | ||
عنوان مقاله [English] | ||
Investigating the phenomenon of cavitation and noise emission in marine propellers | ||
نویسندگان [English] | ||
Mohammadhusein Qaedsharaf1؛ Kamin Saberizad1؛ vahid aeeni2؛ Seyyed Hussein khoshdel Hashemi3 | ||
1Department of Mechanical Engineering, Malik Ashtar University of Technology, Isfahan | ||
2Technical and Vocational University No. 1 Pesran (Shahed Mufteh Hamadan) | ||
3Department of Mechanical Engineering, University of Maritime and Marine Sciences, Chabahar | ||
چکیده [English] | ||
Marine propellers are important and vital members that establish a connection between the floating engine and the water, and most of the power generated by them turns into the forward movement of the floating. The phenomenon of cavitation is one of the important issues in the design of floating propellers, and it can be mentioned as a criterion for design, because if this unwanted phenomenon occurs, the acoustic benefits of the ship's propeller will be reduced, and in some cases irreparable damage will occur. Sees. In the design of vessels, noise creates relatively different limitations, which are discussed in two areas, firstly, the effect of noise on the sensors and systems of internal weapons, and secondly, the effect of this noise around the ship, which is one of the factors of identification by enemy identification systems. In subsurface floats, the most important parameter in propeller design is the amount of concealment and reduction of the emission noise level. The vortex of the tip of the propeller blade can be introduced as one of the strongest sources of noise generation, reduction of thrust and efficiency, and the cause of induced vibrations on the body. Therefore, the geometric factors affecting the blade tip geometry should be optimized to achieve this goal. In this research, an attempt is made to introduce the phenomenon of cavitation and examine its disadvantages. | ||
کلیدواژهها [English] | ||
Propeller, thrust, cavitation, acoustics, buoyancy | ||
مراجع | ||
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