On the numerical resolution of hydraulic jumps: Algorithms, boundary conditions, and turbulence models
López Castaño, S.; Van Hoydonck, W. (2024). On the numerical resolution of hydraulic jumps: Algorithms, boundary conditions, and turbulence models. version 3.0. FH reports, 20_035_2. Flanders Hydraulics: Antwerp. VIII, 31 + 9 p. app. pp. https://dx.doi.org/10.48607/264
Deel van: FH reports. Flanders Hydraulics: Antwerp. , meer
This reports deals with the verification and validation of a newly proposed modification to the k‐? SST model and optimized Volume‐of‐Fluid (VoF) algorithm for the simulation of stable hydraulic jumps in engineering settings. The proposed modifications suggest alternatives to the Scale‐Adaptive‐Simulation (SAS) concept in order to tackle some perceived deficiencies in the original formulation of Menter and Egorov, 2010, for two‐phase incompressible flows incurring in sheared flows. Additional modifications to the proposed turbulence model are suggested in order to reduce spurious generation of turbulence across the interface and close to walls. Results show overall agreement with literature studies regarding the study of hydraulic jumps in sloped channels, including numerical and physical experiments. Furthermore, implicit‐explicit Flux‐Corrected Transport methods are implemented in order to allow the use of dual time‐step discretizations.
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