Application of Three RANS Turbulence Models to Aged Water Transmission Pipes

by Ryan T. Christensen, (corresponding author), Staff Engineer; Hansen, Allen, and Luce, Inc., 6771 South 900 East, Midvale, UT 84047, rchristensen@hansenallenluce.com,
Robert E. Spall, P.E., Professor; Utah State Univ., 8200 Old Main Hill, Logan, UT 84322-8200., spall@engineering.usu.edu,
Steven L. Barfuss, P.E., (M.ASCE), Research Assistant Professor; Utah State Univ., 8200 Old Main Hill, Logan, UT 84322-8200., steve.barfuss@.usu.edu,


Serial Information: Issue 1, Pg. 135-139


Document Type: Journal Paper

Abstract: The Reynolds-averaged Navier-Stokes (RANS) equations were solved to model flow through two aged pipes at Reynolds numbers ranging from 6,700 to 31,000. Turbulence models employed include the v2-f, realizable k-ε, and k-ω models. The v2-f turbulence model was found to more accurately reproduce available experimental results compared to the k-ε and k-ω turbulence models for flows at R=13,000 and R=31,000, while the realizable k-ε model was most accurate at R=6,700. Much of the error is likely attributable to deficiencies in modeling complex flow structures with flow separation and wall roughness elements smaller than the grid scale.

Subject Headings: Turbulence | Model accuracy | Pipes | Hydrologic models | Power transmission | Water pipelines | Fluid flow | Pipe flow | Turbulent flow | Numerical models | Errors (statistics) | Flow separation |

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