Ocean Systems Engineering

  • 제14권1호
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  • Pages.53-72
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  • 2024
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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Experimental and statistical investigation of torque coefficient in optimized surface piercing propeller

  • Masoud Zarezadeh (School of Mechanical Engineering, Iran University of Science and Technology) ;
  • Nowrouz Mohammad Nouri (School of Mechanical Engineering, Iran University of Science and Technology) ;
  • Reza Madoliat (School of Mechanical Engineering, Iran University of Science and Technology)
  • 투고 : 2023.12.12
  • 심사 : 2024.01.20
  • 발행 : 2024.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

The interaction of the blade of surface-piercing propellers (SPPs) with the water/air surface is a physical phenomenon that is difficult to model mathematically, so that such propellers are usually designed using empirical approaches. In this paper, a newly developed mechanism for measuring the torque of SPPs in an open water circuit is presented. The mechanism includes a single-component load cell and a deformable torque sensor to detect the forces exerted on the propeller. Deformations in the sensor elements lead to changes in the strain gauge resistance, which are converted into voltage using a Wheatstone bridge. The amplified signal is then recorded by a 16-channel data recording system. The mechanism is calibrated using a 6-DoF calibration system and a Box-Behnken design, achieving 99% accuracy through multivariate regression and ANOVA. Finally, the results of performance tests on a 4-blade propeller were presented in the form of changes in the torque coefficient as a function of feed rate. The results show that the new mechanism is 8% more accurate than conventional empirical methods.

키워드

과제정보

We are grateful to the Hydrotech Group, which operates in the field of scientific technologies.

참고문헌

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