Author(s): Janek Laanearu; Katrin Kaur; Daniela Malcangio
Linked Author(s): Daniela Malcangio, Janek Laanearu
Keywords: No Keywords
Abstract: The dynamics of gravity current developing along the channel with a trapezoidal-shape cross-section is numerically investigated using the 3D computational fluid dynamics modelling approach. The numerical modelling results are qualitatively compared with the observed stratified-flow dynamical characteristics, which are gained from a series of large-scale experiments of the uni- and bi-directional flows across a submerged, trapezoidal, sill obstruction with presence of background vorticity. Measured velocity profiles are used at the channel cross-sections to demonstrate the observed internal-flow dynamics under a range of parametric forcing conditions, related essentially to the angular speed of flume. The computational domain of the numerical study is a geometrically basic version of the flume used in the experimental study by Adduce et al. (2019). The fields of density and turbulence of the stratified flow along and across the channel sections are numerically gained.
Year: 2024