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This paper presents an experimental study performed in a given compound channel under steady-state incompressible air flow. Hot wire probes and Pitot tube were employed to measure mean velocity and velocity fluctuations characteristics in a turbulent flow between parallel plates. Test sections were formed by two parallel plates attached on a side wall of a wind channel, forming a slot with width d...
By means of hot wire anemometry technique and flow visualizations, the presence of the phenomenon of the bistability around three cylinders in two triangular arrangements is investigated in an aerodynamic channel and in a water channel. Bistability occurs in flows over sets of bluff bodies forming a flip-flopping wake characterized by a biased flow switching at irregular intervals, which can represent...
This paper presents the experimental study of the flow instabilities in the first rows of tube banks. The study is performed using hot wire anemometry technique in an aerodynamic channel as well as flow visualizations in a water channel. In the wind channel three tube banks with square arrangement and pitch to diameter ratios P/D=1.26, 1.4 and 1.6 were studied. The Reynolds number range for the velocities...
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