Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil
This paper presents the uncertainty quantification and sensitivity analysis of the standard k-ɛ turbulence model applied to the numerical prediction of the non-cavitating and cavitating flow around a 2D NACA66MOD hydrofoil. The turbulence model parameters are treated as epistemic uncertain variables...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Faculty of Mechanical Engineering and Naval Architecture
2025-01-01
|
| Series: | Brodogradnja |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/471940 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841553159005143040 |
|---|---|
| author | Simone Romani Mitja Morgut Lucia Parussini Marzio Piller |
| author_facet | Simone Romani Mitja Morgut Lucia Parussini Marzio Piller |
| author_sort | Simone Romani |
| collection | DOAJ |
| description | This paper presents the uncertainty quantification and sensitivity analysis of the standard k-ɛ turbulence model applied to the numerical prediction of the non-cavitating and cavitating flow around a 2D NACA66MOD hydrofoil. The turbulence model parameters are treated as epistemic uncertain variables, and the forward propagation of uncertainty is evaluated using the non-intrusive polynomial chaos approach. The required simulations are performed using a commercial CFD solver. The Sobol indices are used to rank the relative contribution of closure coefficients to the total uncertainty in the output quantities. For the considered case, the ranking of the model parameters is not influenced by the presence of the sheet cavity flow, while it varies with respect to the considered output quantity. |
| format | Article |
| id | doaj-art-874a780813f641109d7bc7b138a142ee |
| institution | Kabale University |
| issn | 0007-215X 1845-5859 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Faculty of Mechanical Engineering and Naval Architecture |
| record_format | Article |
| series | Brodogradnja |
| spelling | doaj-art-874a780813f641109d7bc7b138a142ee2025-01-09T11:40:59ZengFaculty of Mechanical Engineering and Naval ArchitectureBrodogradnja0007-215X1845-58592025-01-0176111610.21278/brod76105Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoilSimone Romani0Mitja Morgut1Lucia Parussini2Marzio Piller3Department of Engineering and Architecture, University of Trieste, 34127 Trieste, ItalyDepartment of Engineering and Architecture, University of Trieste, 34127 Trieste, ItalyDepartment of Engineering and Architecture, University of Trieste, 34127 Trieste, ItalyDepartment of Engineering and Architecture, University of Trieste, 34127 Trieste, ItalyThis paper presents the uncertainty quantification and sensitivity analysis of the standard k-ɛ turbulence model applied to the numerical prediction of the non-cavitating and cavitating flow around a 2D NACA66MOD hydrofoil. The turbulence model parameters are treated as epistemic uncertain variables, and the forward propagation of uncertainty is evaluated using the non-intrusive polynomial chaos approach. The required simulations are performed using a commercial CFD solver. The Sobol indices are used to rank the relative contribution of closure coefficients to the total uncertainty in the output quantities. For the considered case, the ranking of the model parameters is not influenced by the presence of the sheet cavity flow, while it varies with respect to the considered output quantity.https://hrcak.srce.hr/file/471940uncertainty quantificationpolynomial chaos expansion,turbulence modelcavitationhydrofoil |
| spellingShingle | Simone Romani Mitja Morgut Lucia Parussini Marzio Piller Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil Brodogradnja uncertainty quantification polynomial chaos expansion, turbulence model cavitation hydrofoil |
| title | Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil |
| title_full | Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil |
| title_fullStr | Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil |
| title_full_unstemmed | Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil |
| title_short | Uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil |
| title_sort | uncertainty quantification and global sensitivity analysis of turbulence model closure coefficients for sheet cavity flow around a hydrofoil |
| topic | uncertainty quantification polynomial chaos expansion, turbulence model cavitation hydrofoil |
| url | https://hrcak.srce.hr/file/471940 |
| work_keys_str_mv | AT simoneromani uncertaintyquantificationandglobalsensitivityanalysisofturbulencemodelclosurecoefficientsforsheetcavityflowaroundahydrofoil AT mitjamorgut uncertaintyquantificationandglobalsensitivityanalysisofturbulencemodelclosurecoefficientsforsheetcavityflowaroundahydrofoil AT luciaparussini uncertaintyquantificationandglobalsensitivityanalysisofturbulencemodelclosurecoefficientsforsheetcavityflowaroundahydrofoil AT marziopiller uncertaintyquantificationandglobalsensitivityanalysisofturbulencemodelclosurecoefficientsforsheetcavityflowaroundahydrofoil |