The flow in stirred tanks is very complicated because it passes around the rotating impeller blades, interacts with the stationary baffles or stator blades leading to high-intensity turbulence, and then goes through loops and returns to the impeller region. A penetrating understanding of the flow in stirred tanks is necessary for the tank design and optimization, because it could have a significant impact to the overall design characteristics, which will affect directly the production, the quality of the product and the maintenance costs. Despite the recent advances in computational fluid dynamics (CFD), testing still plays a vital role in the development of high-performance stirred tanks. This paper describes measurements and results obtained by traversing a five-hole probe in a 6-m3 stirred tank. The three-dimensional flow field was obtained. The separation region was also detected. The majority of the measurements were conducted in the 6-m3 tank, but unique to this investigation are measurements we have conducted with Pitot tubes in an 160-m3 geometrically-similar full-scale tank. We also have earlier results obtained by Particle Image Velocimetry (PIV) in another geometrically-similar but much smaller tank, namely a 0.1m3 tank. This provides the unique opportunity to explore how such flows scale with size and speed, extending to Reynolds numbers that approach ten million. Some numerical results were also conducted, using the commercial code FLUENT, and the results are presented together with the experimental data.
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ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences
August 10–14, 2008
Jacksonville, Florida, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4841-8
PROCEEDINGS PAPER
Flow Property Measurements of Stirred-Tank Flow Across Three Reynolds Number Decades
Yihong Yang,
Yihong Yang
Virginia Polytechnic Institute and State University, Blacksburg, VA
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Roe-Hoan Yoon,
Roe-Hoan Yoon
Virginia Polytechnic Institute and State University, Blacksburg, VA
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Demetri P. Telionis,
Demetri P. Telionis
Virginia Polytechnic Institute and State University, Blacksburg, VA
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Asa Weber,
Asa Weber
FLSmidth Minerals, Salt Lake City, UT
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Don Foreman
Don Foreman
FLSmidth Minerals, Salt Lake City, UT
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Yihong Yang
Virginia Polytechnic Institute and State University, Blacksburg, VA
Roe-Hoan Yoon
Virginia Polytechnic Institute and State University, Blacksburg, VA
Demetri P. Telionis
Virginia Polytechnic Institute and State University, Blacksburg, VA
Asa Weber
FLSmidth Minerals, Salt Lake City, UT
Don Foreman
FLSmidth Minerals, Salt Lake City, UT
Paper No:
FEDSM2008-55154, pp. 329-336; 8 pages
Published Online:
June 30, 2009
Citation
Yang, Y, Yoon, R, Telionis, DP, Weber, A, & Foreman, D. "Flow Property Measurements of Stirred-Tank Flow Across Three Reynolds Number Decades." Proceedings of the ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. Volume 2: Fora. Jacksonville, Florida, USA. August 10–14, 2008. pp. 329-336. ASME. https://doi.org/10.1115/FEDSM2008-55154
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