Author(s): P. Langohr; D. B. Bung

Linked Author(s): Daniel B. Bung, Phillip Langohr

Keywords: CFD; Large Eddy Simulation; Labyrinth weirs

Abstract: The major advantage of labyrinth weirs over linear weirs is hydraulic efficiency. In hydraulic modeling efforts, this strength contrasts with limited pump capacity as well as limited computational power for CFD simulations. For the latter, reducing the number of investigated cycles can significantly reduce necessary computational time. In this study, a labyrinth weir with different cycle numbers was investigated. The simulations were conducted in FLOW-3D HYDRO as a Large Eddy Simulation. With a mean deviation of 1.75 % between simulated discharge coefficients and literature design equations, a reasonable agreement was found. For downstream conditions, overall consistent results were observed as well. However, the orientation of labyrinth weirs with a single cycle should be chosen carefully under consideration of the individual research purpose.

DOI: https://doi.org/10.3850/978-90-833476-1-5_iahr40wc-p0531-cd

Year: 2023