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Flow Analysis around a Floating Cylinder in a Swirl Flow with a Stereoscopic-PIV
Doh D.H(도덕희),Hwang T.G(황태규),Tanaka K(다나카 코지),Takei M(타께이 마사) 한국유체기계학회 2006 유체기계 연구개발 발표회 논문집 Vol.- No.-
The flow characteristics around a floating cylinder in a swirling flow field in a vertical pipe with a length of 600㎜ and an inner diameter of 100mm is investigated by the use of the Stereoscopic-PIV system. The measurement system consists of two cameras, a Nd-Yag laser and a host computer. Optical sensors(LEDs) were used to detect the location of the floating cylinder and to activate the Stereoscopic-PIV system. A conditional sampling Stereoscopic-PIV system was developed in which the flow fields around the floating cylinder are measured at the events of the activations. It has been verified that the motion of the floating cylinder becomes stable when the azimuthal velocity component of the swirl flow is maintained at stable states.