Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of an Obstacle on the Bottom Surface of a Circular Cylinder on the Spin-up Flow

원통 용기 바닥의 장애물이 스핀업 유동에 미치는 영향

  • 최윤환 (동아대학교 생산기술연구소) ;
  • 문종춘 (경동정보대학 기계산업시스템계열) ;
  • 서용권 (동아대학교 기계산업시스템공학부)
  • Published : 2001.11.01
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Abstract

In this paper, the spin-up from rest to a state of solid-body rotation in a circular container with a slender rectangular obstacle on the bottom wall is analysed experimentally. We use a PIV method for the evolution of the free-surface flow. Laboratory experiments have been carried out for a variety of the obstacle height h(0, 5, 10 [mm]) and the liquid depth H(25, 50, 75, 100 [mm]). It was found that the spin-up time is crucially dependent on the obstacle height T. In the case of T=10[mm] the spin-up time is considerably shorter then the other cases.

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