Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy
Results from large-eddy simulations of a classical hydraulic jump at inlet Froude number two are reported. The computations were performed using the general-purpose finite-volume-based code OpenFOAM<sup>®</sup>, and the primary goal was to evaluate the influence of the modelling paramete...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/7/3/101 |
| _version_ | 1827649112140414976 |
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| author | Timofey Mukha Silje Kreken Almeland Rickard E. Bensow |
| author_facet | Timofey Mukha Silje Kreken Almeland Rickard E. Bensow |
| author_sort | Timofey Mukha |
| collection | DOAJ |
| description | Results from large-eddy simulations of a classical hydraulic jump at inlet Froude number two are reported. The computations were performed using the general-purpose finite-volume-based code OpenFOAM<sup>®</sup>, and the primary goal was to evaluate the influence of the modelling parameters on the predictive accuracy, as well as establish the associated best-practice guidelines. A benchmark simulation was conducted on a grid with a 1 mm-cell-edge length to validate the solver and provide a reference solution for the parameter influence study. The remaining simulations covered different selections of the modelling parameters: geometric vs. algebraic interface capturing, three mesh resolution levels, and four choices of the convective flux interpolation scheme. Geometric interface capturing led to better accuracy, but deteriorated the numerical stability and increased the simulation times. Interestingly, numerical dissipation was shown to systematically improve the results, both in terms of accuracy and stability. Strong sensitivity to the grid resolution was observed directly downstream of the toe of the jump. |
| first_indexed | 2024-03-09T19:51:22Z |
| format | Article |
| id | doaj.art-96fe673be52f4e8da3f644cc38bca115 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-09T19:51:22Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-96fe673be52f4e8da3f644cc38bca1152023-11-24T01:09:24ZengMDPI AGFluids2311-55212022-03-017310110.3390/fluids7030101Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive AccuracyTimofey Mukha0Silje Kreken Almeland1Rickard E. Bensow2Department of Mechanics and Maritime Sciences, Chalmers University of Technology, SE-412 96 Gothenburg, SwedenDepartment of Civil and Environmental Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, NorwayDepartment of Mechanics and Maritime Sciences, Chalmers University of Technology, SE-412 96 Gothenburg, SwedenResults from large-eddy simulations of a classical hydraulic jump at inlet Froude number two are reported. The computations were performed using the general-purpose finite-volume-based code OpenFOAM<sup>®</sup>, and the primary goal was to evaluate the influence of the modelling parameters on the predictive accuracy, as well as establish the associated best-practice guidelines. A benchmark simulation was conducted on a grid with a 1 mm-cell-edge length to validate the solver and provide a reference solution for the parameter influence study. The remaining simulations covered different selections of the modelling parameters: geometric vs. algebraic interface capturing, three mesh resolution levels, and four choices of the convective flux interpolation scheme. Geometric interface capturing led to better accuracy, but deteriorated the numerical stability and increased the simulation times. Interestingly, numerical dissipation was shown to systematically improve the results, both in terms of accuracy and stability. Strong sensitivity to the grid resolution was observed directly downstream of the toe of the jump.https://www.mdpi.com/2311-5521/7/3/101hydraulic jumplarge-eddy simulationCFDOpenFOAM |
| spellingShingle | Timofey Mukha Silje Kreken Almeland Rickard E. Bensow Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy Fluids hydraulic jump large-eddy simulation CFD OpenFOAM |
| title | Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy |
| title_full | Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy |
| title_fullStr | Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy |
| title_full_unstemmed | Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy |
| title_short | Large-Eddy Simulation of a Classical Hydraulic Jump: Influence of Modelling Parameters on the Predictive Accuracy |
| title_sort | large eddy simulation of a classical hydraulic jump influence of modelling parameters on the predictive accuracy |
| topic | hydraulic jump large-eddy simulation CFD OpenFOAM |
| url | https://www.mdpi.com/2311-5521/7/3/101 |
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