The classical grid turbulence is revisited in an effort to better understand the role of the finite-thickness flow passage of the turbulence generator. The virtually zero-thickness orificed perforated plate (OPP) is contrasted with its reversed counterpart, the converging-nozzled perforated plate (CNPP). The respective turbulent flows are detailed via a triple-wire of a constant-temperature hot wire anemometer. The two flows are compared in terms of the spatial evolution of the essential turbulence characteristics, including the various turbulence intensities and length scales. As expected, a higher level of turbulence resulted from the sharp edges of the OPP. Surprisingly, the finite-thickness converging passages of the CNPP caused the other turbulence parameters to behave rather perplexingly.
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ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting
July 15–20, 2018
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5155-5
PROCEEDINGS PAPER
Perforated-Plate Turbulence: Orifice Versus Converging Nozzle
Yang Yang,
Yang Yang
University of Windsor, Windsor, ON, Canada
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David S.-K. Ting,
David S.-K. Ting
University of Windsor, Windsor, ON, Canada
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Steve Ray
Steve Ray
Essex Energy, Oldcastle, ON, Canada
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Yang Yang
University of Windsor, Windsor, ON, Canada
David S.-K. Ting
University of Windsor, Windsor, ON, Canada
Steve Ray
Essex Energy, Oldcastle, ON, Canada
Paper No:
FEDSM2018-83038, V001T06A001; 9 pages
Published Online:
October 24, 2018
Citation
Yang, Y, Ting, DS, & Ray, S. "Perforated-Plate Turbulence: Orifice Versus Converging Nozzle." Proceedings of the ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. Volume 1: Flow Manipulation and Active Control; Bio-Inspired Fluid Mechanics; Boundary Layer and High-Speed Flows; Fluids Engineering Education; Transport Phenomena in Energy Conversion and Mixing; Turbulent Flows; Vortex Dynamics; DNS/LES and Hybrid RANS/LES Methods; Fluid Structure Interaction; Fluid Dynamics of Wind Energy; Bubble, Droplet, and Aerosol Dynamics. Montreal, Quebec, Canada. July 15–20, 2018. V001T06A001. ASME. https://doi.org/10.1115/FEDSM2018-83038
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