Benchmark of computational hydraulics models for open-channel flow with lateral cavities

Ouro, Pablo ; Cea, Luis ; Croquer, Sergio ; Dong, Wenhao ; Garcia-Feal, Orlando ; Navas-Montilla, Adrián (Universidad de Zaragoza) ; Rogers, Benedict D. ; Uchida, Tatsuhiko ; Juez, Carmelo

Resumen: Computational models in hydro-environmental engineering are diverse in their background formulation and span from two-dimensional depth-averaged shallow water models, to complex fully three-dimensional turbulence models resolving large-eddy simulation with surface capturing techniques, and to Lagrangian particle-based methods. This paper presents a first-of-its-kind comparison of six different computational hydraulics fluid dynamics models, namely Iber+, HO-SWM, GBVC, OpenFOAM (RANS), Hydro3D (LES) and DualSPHysics (SPH), in the prediction of mean velocities and free-surface dynamics in two benchmarks involving open-channel flows with symmetric lateral cavities. Results show that shallow-water models capture relatively well the main large-scale coherent structures of the in-cavity flow, with wider shear layers compared to three-dimensional models, and higher velocities in the main channel. Three-dimensional RANS, LES and SPH yield improved predictions of mean velocities compared with experimental data. Computational cost has been quantified for all models with a logarithmic growth when increasing model complexity. The transverse standing wave is captured by most models, with the shallow-water ones matching the theoretical value, while the three-dimensional models overestimate it slightly.

Idioma: Inglés

DOI: 10.1080/00221686.2024.2401905

Año: 2024

Publicado en: JOURNAL OF HYDRAULIC RESEARCH 62, 5 (2024), 441-460
ISSN: 0022-1686

Financiación: info:eu-repo/grantAgreement/ES/DGA/E02-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/T32-20R
Financiación: info:eu-repo/grantAgreement/EC/HORIZON EUROPE/101039181 /EU/Dynamic river catchments in a Global Change context: assessing the present, preparing for the future/SEDAHEAD
Financiación: info:eu-repo/grantAgreement/ES/MCIN/AEI/10.13039/501100011033
Financiación: info:eu-repo/grantAgreement/ES/MICINN/JDC2022-048667-I

Tipo y forma: Article (Published version)

Área (Departamento): Área Mecánica de Fluidos (Dpto. Ciencia Tecnol.Mater.Fl.)