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 ��2-��, realizable ��-��, and k-ω models. The ��2-�� turbulence model was found to more accurately reproduce available experimental results compared to the ��-ε and k-ω turbulence models for flows at ��=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.
Application of Three RANS Turbulence Models to Aged Water Transmission PipesJournal of Hydraulic Engineering
PublisherAmerican Society of Civil Engineers
Citation InformationJan 2011: Application of Three RANS Turbulence Models to Aged Water Transmission Pipes. Journal of Hydraulic Engineering ASCE; (Ryan Christensen, Robert Spall, *) Vol. 137, No. 1, pp. 135-139 (2011)