Characterization of time-averaged turbulence statistics for shear thinning fluid in horizontal concentric annulus using rans based CFD simulation

Xiao Xiong, Azizur Rahaman, Yan Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationPolar and Arctic Sciences and Technology; Petroleum Technology
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume8
ISBN (Electronic)9780791849996
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016 - Busan, Korea, Republic of
Duration: 19 Jun 201624 Jun 2016

Other

OtherASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016
CountryKorea, Republic of
CityBusan
Period19/6/1624/6/16

Fingerprint

Shear thinning
Computational fluid dynamics
Turbulence
Statistics
Fluids
Shear stress
Drag reduction
Polymers
Turbulence models
Turbulent flow
Flow rate

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

Cite this

Xiong, X., Rahaman, A., & Zhang, Y. (2016). Characterization of time-averaged turbulence statistics for shear thinning fluid in horizontal concentric annulus using rans based CFD simulation. In Polar and Arctic Sciences and Technology; Petroleum Technology (Vol. 8). [V008T11A014] American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2016-54379

Characterization of time-averaged turbulence statistics for shear thinning fluid in horizontal concentric annulus using rans based CFD simulation. / Xiong, Xiao; Rahaman, Azizur; Zhang, Yan.

Polar and Arctic Sciences and Technology; Petroleum Technology. Vol. 8 American Society of Mechanical Engineers (ASME), 2016. V008T11A014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Xiong, X, Rahaman, A & Zhang, Y 2016, Characterization of time-averaged turbulence statistics for shear thinning fluid in horizontal concentric annulus using rans based CFD simulation. in Polar and Arctic Sciences and Technology; Petroleum Technology. vol. 8, V008T11A014, American Society of Mechanical Engineers (ASME), ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016, Busan, Korea, Republic of, 19/6/16. https://doi.org/10.1115/OMAE2016-54379
Xiong X, Rahaman A, Zhang Y. Characterization of time-averaged turbulence statistics for shear thinning fluid in horizontal concentric annulus using rans based CFD simulation. In Polar and Arctic Sciences and Technology; Petroleum Technology. Vol. 8. American Society of Mechanical Engineers (ASME). 2016. V008T11A014 https://doi.org/10.1115/OMAE2016-54379
Xiong, Xiao ; Rahaman, Azizur ; Zhang, Yan. / Characterization of time-averaged turbulence statistics for shear thinning fluid in horizontal concentric annulus using rans based CFD simulation. Polar and Arctic Sciences and Technology; Petroleum Technology. Vol. 8 American Society of Mechanical Engineers (ASME), 2016.
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