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Title

DRAG PREDICTION IN THE NEAR WAKE OF A CIRCULAR CYLINDER BASED ON DPIV DATA

Writers

SON O. | CETINER O.

Pages

 Start Page 1963 | End Page 1968

Abstract

 This study focuses on DRAG PREDICTION in the near-wake of a CIRCULAR CYLINDER by use of mean velocity profiles and discusses the closest location where a wake survey would yield an accurate result. Although the investigation considers both the mean and fluctuating velocities, the main focus is on the mean MOMENTUM DEFICIT which should be handled properly beyond a critical distance. Digital Particle Image Velocimetry (DPIV) experiments are performed in a Reynolds number range of 100 to 1250. Wake characteristics such as vortex formation length (L) and wake width (t) are determined and their relations to DRAG PREDICTION are presented.Drag coefficients determined by MOMENTUM DEFICIT formula are found to be in good agreement with experimental and numerical literature data in present Reynolds number regime.

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