Time-resolved refractive index matched PIV measurements inside and downstream of a 90° bend
Experimental Thermal and Fluid Science（2019）
Abstract
•Time-resolved PIV measurements were made in a 90° bend at a Re of 34,800.•The unsteady motions were characterized using a Snapshot POD technique.•Unsteady variations in secondary flow were found throughout much of the bend.•Low to moderate frequency motions were prevalent in the first part of the bend.
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Key words
Reynolds Number Scaling,Flow Control,Hydrodynamic Turbulence,Particle Image Velocimetry
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