Author(s): Georges Kesserwani; Xitong Sun; Virginia Stovin

Linked Author(s): Virginia Stovin, Georges Kesserwani

Keywords: Calibrated hydrodynamic simulations; Flow wakes past cylinders; High-resolution modelling; Solute transport; Laboratory experiments

Abstract: A practical approach to predict solute transport and mixing in environmental shallow flows is proposed using second-order discontinuous Galerkin (DG2) simulations of the two-dimensional (2D) shallow water equations (SWE) and of the advection-diffusion equation (ADE). Calibrated DG2-SWE simulations are used based on increased Manning’s coefficients, nM, to ensure physically acceptable ranges for fields required for the DG2-ADE simulations, i. e. the turbulent diffusivity, Dt, and turbulent kinetic energy, TKE, fields. The approach is successfully applied to simulate measured (temporal) concentration profiles and longitudinal (spatial) dispersion coefficients, Dx, from experiments involving flow past cylinder array under laminar, transitional, and low-turbulence regimes.

DOI: https://doi.org/10.3850/iahr-hic2483430201-321

Year: 2024