Design And Analysis Of An Underwater Propeller Blade

Muhammad Zailan, Zaima Syafiqah (2018) Design And Analysis Of An Underwater Propeller Blade. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The details about the designing and simulating of an Autonomous Underwater Vehicle (AUV) propeller blade is shown in this final year project report. ROV is a tethered underwater mobile device which would able to work in any depths of water and has more abilities to perform mechanically, inspection and recording tasks. Propulsion plays a significant role in the movement of the ROV. The objective of this paper is to determine the important design factors that affecting propeller efficiency and to identify the velocity and thrust in order to determine the ROV propeller blade efficiency. Based on the literature review study, the number of blades, propeller diameter, rake angle, blade design or blade area and ducted propeller are very important parameter in order to design the optimum propeller. The best conceptual design was selected as it achieved highest value in concept evaluation. The new design of the propeller blade is based on the specification parameter of the existing thruster (T200 thruster by Blue Robotics) so that the diameter of the propeller blade of the new design same and it would able to fixed into existing T200 thruster. Solidworks is used to design the propeller blade and analyse some performance of it. In addition, ANSYS Fluent is also being used to analyse the meshing size and structural meshing of the propeller blade with its propeller domains. The efficiency of the propeller blade is calculated by using the mathematical formulation. It was found that from the calculation, the efficiency of the propeller blade is different with different rpm value. In addition, it was known that as the rpm, thrust coefficient and velocity inlet decreased, the efficiency of the propeller blade is increasing. At the speed of 31.42 rad/s, the efficiency of the propeller blade is 93.63% while at 183.25rad/s, the propeller efficiency is 92.91% and for 397.94 rad/s, the propeller efficiency is about 92.42%.

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