A RANS based shear stress transportation (SST) model was employed in this study to validate experimental results from a recent literature, which investigated the fully developed turbulent flow for a non-Newtonian shear thinning fluid, containing drag reduction polymer additives in a horizontal concentric annulus (inner to outer radio θ = 0.4). The polymer concentration varied from 0.07% V/V to 0.12% V/V and three mass flow rates from 3.92 kg/s to 5.95 kg/s were analyzed. The viscous property of the fluid was modeled by the power-law model. Simulation performed with the commercial code of ANSYS-CFX indicated that the SST model with default model constants overestimated the turbulence statistics of shear thinning flow in the near wall region where y+<60. As an effort to improve simulation accuracy, one of the model constants α1 was tuned in this study for the first time. Simulation results obtained from the modified model showed better agreement with experimental data compared to those from the default one. The present study represents a successful benchmark task for simulating turbulent shear thinning flow in concentric annuli with modified turbulence model constants.
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ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2016
Busan, South Korea
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4999-6
PROCEEDINGS PAPER
Characterization of Time-Averaged Turbulence Statistics for Shear Thinning Fluid in Horizontal Concentric Annulus Using RANS Based CFD Simulation Available to Purchase
Xiao Xiong,
Xiao Xiong
Memorial University of Newfoundland, St. John’s, NL, Canada
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Mohammad Azizur Rahman,
Mohammad Azizur Rahman
Memorial University of Newfoundland, St. John’s, NL, Canada
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Yan Zhang
Yan Zhang
Memorial University of Newfoundland, St. John’s, NL, Canada
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Xiao Xiong
Memorial University of Newfoundland, St. John’s, NL, Canada
Mohammad Azizur Rahman
Memorial University of Newfoundland, St. John’s, NL, Canada
Yan Zhang
Memorial University of Newfoundland, St. John’s, NL, Canada
Paper No:
OMAE2016-54379, V008T11A014; 7 pages
Published Online:
October 18, 2016
Citation
Xiong, X, Rahman, MA, & Zhang, Y. "Characterization of Time-Averaged Turbulence Statistics for Shear Thinning Fluid in Horizontal Concentric Annulus Using RANS Based CFD Simulation." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology. Busan, South Korea. June 19–24, 2016. V008T11A014. ASME. https://doi.org/10.1115/OMAE2016-54379
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