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

• Main Author: Basse, Nils T
• Format: Journal Article
• Language: English
• Published: 02-02-2024
• Subjects: Physics - Fluid Dynamics
• DOI: 10.48550/arxiv.2402.01800

MDPI Water, Volume 15, page 3234, 2023 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 K\'arm\'an 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.