Velocity, Turbulent Intensity and Pressure Measurements in Turbulent Separated and Curved Flows
Onur Yemenici1, Habib Umur2
1Onur Yemenici, Mechanical Engineering Department, Uludag University, Bursa, Turkey.
2Habib Umur, Mechanical Engineering Department, Uludag University, Bursa, Turkey.
Manuscript received on May 22, 2013. | Revised Manuscript received on June 03, 2013. | Manuscript published on June 30, 2013. | PP: 163-166 | Volume-2, Issue-5, June 2013. | Retrieval Number: E1735062513/2013©BEIESP

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Abstract: Velocity, turbulent intensity and pressure measurements over various flow surfaces were carried out by a constant-temperature hot wire anemometer and a micro-manometer. The experiments performed over a flat plate, curved walls with a radius of 2.54 m either in concave or convex curvatures and a ribbed wall has a sequence of 7 ribs at the free stream velocity of 20 m/s encompassing turbulent flows. The results showed that the concave curvature destabilized the flow and increased turbulent intensity, contrary to the convex curvature. The presence of the ribs also caused bigger turbulent intensities and the flow separations and reattachments were determined before the first rib, between the ribs, on the first rib and behind the last rib.
Keywords: Flow separation, turbulent intensity, curved flow, ribbed surface.