Turbulent jets have been extensively studied in the past due to their fundamental importance and wide spread usage in numerous industrial processes to enhance momentum, heat and mass transfer. Most previous work focused on the far-field or self-similar region of the flow. However, the initial development region, where the flow is dominated by streamwise and large-scale, Kelvin-Helmholtz-type, structures, received far less attention. In the current study, Particle Image Velocimetry (PIV) was used to obtain reliable statistics in the near-field region of a turbulent submerged jet. The jet issued from an 84 diameter, D, long pipe which ensured fully-developed turbulent flow conditions at the outlet. The two-dimensional flow field in the plane containing the jet axis was measured in the initial 8D region, for three Reynolds numbers: 14,602, 19,135, and 24,685. The selected Reynolds numbers overlap with the previously identified critical Reynolds number range, 10,000–20,000, where flow characteristics of a jet undergo a dramatic transition to a much more chaotic and well-mixed state or fully developed turbulence.
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ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4948-4
PROCEEDINGS PAPER
PIV Study of the Near-Field Region of a Turbulent Round Jet Available to Purchase
Ivana M. Milanovic,
Ivana M. Milanovic
University of Hartford, West Hartford, CT
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Khaled J. Hammad
Khaled J. Hammad
Dantec Dynamics, Inc., Ramsey, NJ
Search for other works by this author on:
Ivana M. Milanovic
University of Hartford, West Hartford, CT
Khaled J. Hammad
Dantec Dynamics, Inc., Ramsey, NJ
Paper No:
FEDSM-ICNMM2010-31139, pp. 1353-1361; 9 pages
Published Online:
March 1, 2011
Citation
Milanovic, IM, & Hammad, KJ. "PIV Study of the Near-Field Region of a Turbulent Round Jet." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C. Montreal, Quebec, Canada. August 1–5, 2010. pp. 1353-1361. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-31139
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