Showing papers by "ABB Ltd published in 2023"
09 Jun 2023
TL;DR: In this article , a mixing length based algebraic turbulence model calibrated to pipe flow is presented to capture the increasing turbulence production-to-dissipation ratio observed in connection with 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.