Conditional Sampling Stereoscopic-PIV Measurement around Rotating and Revolving Cylinder in Internal Swirly Flow Generated by Tangential Suction Jet

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Abstract

   A conditional sampling stereoscopic-PIV has been developed for the flow field measurement around a rotating and revolving cylinder. Four Fiber sensors are used to detect the location and the orientation of the rotating and revolving cylinder and to activate the stereoscopic-PIV system. The flow characteristics around a rotating and revolving cylinder in an internal swirling flow generated by tangential suction jet in a vertical pipe with a length of 600mm are investigated by the use of the conditional sampling. The radial distribution of the azimuthal velocity component around a rotating and revolving cylinder has peak at inner position from the vertical pipe wall in the upper, middle and lower vertical positions. The difference of the radial peak position depending on the vertical position and the flow velocity are discussed.

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