Improve Ship Propeller Efficiency via Optimum Design of Propeller Boss Cap Fins

نویسندگان

چکیده

This paper aims to cost-effectively improve the energy efficiency of large vessels in shipping by optimum design propeller boss cap fins (PBCFs). First, a model modern four-blade Ro-Ro ship, with no fin its original design, is experimentally and numerically investigated. The computational fluid dynamics (CFD) reproduced all experiments very well. Then, CFD used conduct comprehensive PBCFs for down-scaled propeller. Besides commonly rectangular PBCFs, nine airfoils are investigated, due their favorable lift-to-drag ratio great potential being effective PBCFs. best performing profile, among 10 shapes, chosen as PBCF further optimization. Finally, propeller/rudder system achieved. It was found yield remarkable gains under both off-design operation conditions, mainly suppressed hub vortex partly extra thrust. strength analysis confirmed that feasible practice can be industrial vessels. generalized criteria also benefit other systems cost-effective saving.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Computational Analysis of Propeller Sheet Cavitation and Propeller-ship Interaction

This paper describes a computational procedure which is being developed for the practical analysis of propeller sheet cavitation and propeller-ship interaction including hull pressure fluctuations. The computational procedure consists of three different, coupled methods: (i) a RANS method for the analysis of the viscous flow around the ship hull and the determination of the velocity field in th...

متن کامل

Propeller Design and Propulsion Concepts for Ship Operation in Off- Design Conditions

Ship operators are calling more often for reduced fuel consumption and economic ship operation also in offdesign. The versatile operation profile of ship types such as RoRo-vessels are then a challenge for the design of the propeller and for the propulsion concept. This paper presents aspects on the propeller design and propulsion concept of a ship as well as design methods for the propeller. L...

متن کامل

بکارگیری روش المان مرزی در طراحی سیستماتیک پروانه

Propeller is one of the main propulsors for marine vehicles which produces thrust to overcome the resistance of the ship. Propeller works in the place behind the ship where the flow is non-uniform and with three dimensional velocities, so it causes the fluctuating thrust. The first part of this paper employs the boundary element method (BEM) to evaluate and analyze the hydrodynamic performance ...

متن کامل

Parallel Processing System Design with "Propeller" Processor

This is a technical and experimental report of parallel processing, using the "Propeller" chip. Its eight 32 bits processors (cogs) can operate simultaneously, either independently or cooperatively, sharing common resources through a central hub. I introduce this unique processor and discuss about the possibility to develop interactive systems and smart interfaces in media arts, because we need...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Energies

سال: 2023

ISSN: ['1996-1073']

DOI: https://doi.org/10.3390/en16031247