Axial and Secondary Flow Study in a 90 Deg Bifurcation Under Pulsating Conditions Using PIV

[+] Author and Article Information
N. M. Nikolaidis, D. S. Mathioulakis

National Technical University of Athens, Department of Mechanical Engineering, Fluids Section, 9 Heroon Polytechniou, 15710 Zografos, Athens, Greece

J. Fluids Eng 124(2), 505-511 (May 28, 2002) (7 pages) doi:10.1115/1.1470478 History: Received July 27, 2000; Revised November 27, 2001; Online May 28, 2002
Copyright © 2002 by ASME
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Bifurcation model. (Dimensions in mm)
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PIV set up. a. Axial flow. b. Secondary flow
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Axial flow-Horizontal part. Velocity vectors and flow rates. (a), (b), (c): Q=2 lt/min,T=88 s,t=76 s, 80 s, 84 s, (d): Q=0.8 lt/min,T=88 s,t=14 s, (e): Q=0.8 lt/min,T=28 s,t=27 s, (f ): Q=2 lt/min,T=11 s,t=0, (g), (h): Q=1.5 lt/min,T=88 s,t=25 s, 30 s  
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Axial flow-vertical part. Velocity vectors and flow rate. (a), (b): Q=2 lt/min, T=11 s, t=4 s, t=7 s.
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Secondary flow. Velocity vectors and flow rates, (a), (b), (c): Q=1 lt/min,T=88 s,t=20 s, 25 s, 29 s, (d), (e): Q=1.5 lt/min, T=88 s, t=20 s, 74 s, (f ), (g): Q=1 lt/min, T=28 s, t=17 s, 23 s, (h): Q=1.5 lt/min, T=11 s, t=8.5 s.




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