An Algebraic Non-Equilibrium Turbulence Model of the High Reynolds Number Transition Region

Abstract

We present a mixing length-based algebraic turbulence model calibrated to pipe flow; the main purpose of the model is to capture the increasing turbulence production-to-dissipation ratio observed in connection with the high Reynolds number transition region. The model includes the mixing length description by Gersten and Herwig, which takes the observed variation of the von Kármán number with Reynolds number into account. Pipe wall roughness effects are included in the model. Results are presented for area-averaged (integral) quantities, which can be used both as a self-contained model and as initial inlet boundary conditions for computational fluid dynamics simulations.

17 pages, 1 table, 10 figures

References in corpus (5)

• One-point statistics for turbulent pipe flow up to $R{e}_{\tau }\approx 6000$
• Evidence that superstructures comprise of self-similar coherent motions in high $R{e}_{\tau }$ boundary layers
• Scaling of global properties of fluctuating and mean streamwise velocities in pipe flow: Characterisation of a high Reynolds number transition region
• Scaling of global properties of fluctuating streamwise velocities in pipe flow: Impact of the viscous term
• Extrapolation of Turbulence Intensity Scaling to $R{e}_{\tau }\gg 10^5$