International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02 | Feb -2017
p-ISSN: 2395-0072
www.irjet.net
To study Magnus Effect on Flettner Rotor Mandar Gadkari1, Varun Deshpande2, Sumant Mahulkar3, Vishal Khushalani4, Shubham Pardhi5, Dr. A.P. Kedar6 1-5 (Final year B.E Mechanical Engineering Student, DBACER ) 6(Professor, Department of Mechanical Engineering, DBACER ) Dr. Babasaheb Ambedkar College of Engineering & Research, Nagpur-441110
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Abstract - Magnus effect is used in many fields. This paper
is a free and renewable energy source that is available in oceans, and furthermore, it can be used in union with all other low carbon fuels. The focus of this paper is to assess the potential for wind-assisted shipping. A few studies have considered a fuel saving potential of flettner rotors (FR’s) with the help of integrated software’s using real time data increases the efficiency up to 8% per rotor [2].
describes the approach taken to create a software model for the wind propulsion device flettner rotors (FR). For simulation purpose FR are considered as 2-D cylinders. Utilizing the advanced computer aided software ANSYS fluent to determine the fluid flow characteristics of cylinder’s magnus effect. The behavioral study of the fluid flow on rotating cylinders is conducted. The simulation here computed as purely laminar boundary layer flow. The flettner rotor devices have been characterized in terms of lift and drag coefficient & this data is compared with the experimental observations available in literature. Key Words: Magnus effect, Cylinder, CFD, Coefficient of Lift & Drag.
MAGNUS EFFECT- Magnus effect is the phenomenon whereby a spinning body in a fluid creates a perpendicular force called lift and an opposing force drag.
I.INTRODUCTION FLETTNER ROTORS Flettner rotors (FR’s) are a form of a wind based propulsion system that utilizes the magnus effect shown by a spinning body in a fluid flow incident upon it. A FR typically comprises of a cylinder with an end plate affixed to it on the top. The rotating cylinder in an airstream generates a lift and a drag force that contributes to the propulsive need of the ship. The rotation to the FR is generally given by an electric motor. Wind is a renewable energy source that is freely available on the world’s oceans. As shipping faces the challenge of reducing its reliance on fossil fuels and cutting its carbon emissions this paper seeks to explore the potential of utilization of ocean wind energy for shipping. Shipping faces an enormous challenge its fossil fuel consumption and ensuring CO2 emissions have grown over time but in the future they must be controlled and reduced [1]. For the past decades, however, international shipping emissions have While there is scope for some improvement and optimization in operations, e.g. where market incentives lead to inefficient practices & it seems likely that technology will have to play a key role in amending the current shipping scenario. Wind power technology is certainly one attractive preference, wind © 2017, IRJET
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Impact Factor value: 5.181
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Fig.1 Forces acting on Flettner Rotor This forces acting on the cylinder provides the propulsion required to sail the ship in the ocean.The lift force vector direction is dependent on the rotor rotation direction [3]. By adjusting the rotation speed, the amounts of drag and lift can be varied.
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