• Title/Summary/Keyword: Image Tracking Interference

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Numerical Analysis on the Pressure Distributions around a Circular Cylinder by Control Rods (제어봉에 의한 원형실린더 주위의 압력분포에 관한 수치해석)

  • Gim, Ok-Sok;Lee, Gyoung-Woo;Cho, Dae-Hwan
    • Journal of Navigation and Port Research
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    • v.31 no.6
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    • pp.485-490
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    • 2007
  • The purpose in having a control rod on a buoy system is to control the motion of it. The system may be composed entirely of a single circular cylinder and a long mooring anchor cable. A control rod has one function to perform in meeting its purpose, and that is to develop a control force in consequence of its orientation and movement relative to the water. The forces and moments generated as a result of the effects of mutual interference. then determine the stability characteristics of the body. In this paper, the study of control-rod-attached buoy's 2-dimensional section was accomplished. model tests and numerical simulations had been carried out with different diameters of control rods. and varying the Reynolds number $Re=5,000{\sim}25,000$ based on the cylinder diameter(D=50mm) to predict the performance of the body and the 2 frame particle tracking method Iud been used to obtain the velocity distribution in the flow field. 50mm circular cylinder Iud been used during the whole experiments and measured results had been compared with each other.

A Study on the Flow Control around a Circular Cylinder by Control rods (제어봉을 부착한 원형실린더 주위 유동제어에 관한 연구)

  • Gim, Ok-Sok;Lee, Gyoung-Woo;Cho, Dae-Hwan
    • Proceedings of KOSOMES biannual meeting
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    • 2007.05a
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    • pp.169-174
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    • 2007
  • The purpose in having a control rod an a buoy system is to control the motion of it. The system may be composed entirely af a single circular cylinder finder and a lang mooring anchor cable. A control rod has one function to perform in meeting its purpose, and that is to develop a control force in consequence of its orientation and movement relative to the water. The forces and moments generated as a result of the effects of mutual interference, then determine the stability characteristics of the body. In this paper, the study of control-rod-attached buoy's 2-dimensional section was accomplished. model tests and numerical simulations had been carried out with different diameters of control rods. and varying the Reynolds number $Re=5,000{\sim}25,000$ based an the cylinder diameter(D=50mm) to. predict the performance af the body and the 2 frame particle tracking method had been used to obtain the velocity distribution in the flaw field 50mm circular cylinder had been used during the whale experiments and measured results had been compared with each other.

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