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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2019028790
pages 1737-1747

EXPERIMENTAL STUDY OF COHERENT FLOW STRUCTURES BEHIND TWO SIMILAR NORMAL FLAT PLATES IN TANDEM ARRANGEMENT

Arian Bahrami
Aerodynamics Laboratory, Department of Mechanical Engineering, Eastern Mediterranean University, Northern Cyprus, Via Mersin 10, Turkey
Hasan Hacisevki
Aerodynamics Laboratory, Department of Mechanical Engineering, Eastern Mediterranean University, Northern Cyprus, Via Mersin 10, Turkey

SINOPSIS

Flow structures behind two identical normal flat plates in tandem arrangement have been investigated for various gap ratios (g/D) between the plates at a high Reynolds number of 3.3 × 104. Constant-temperature hot wire anemometers (CTA) were employed to quantitatively measure the near wake properties behind the downstream plate. The effects of various gap ratios (g/D) ranging from 0.2 to 2.0 were probed, and it was observed that the wake region behind the normal flat plates in tandem arrangement exhibits higher Strouhal number than a normal single flat plate. Moreover, the plotted contours demonstrated that the centerline behind the plates encountered a shedding frequency corresponding to twice the reference shedding frequency (2fs). Finally, regions associated with the highest Reynolds stress were spotted along the edges of the plates in the wake region.

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