Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models
Smoothed Particle Hydrodynamics (SPH) is a Lagrangian computational fluid dynamics method that has been widely used in the analysis of physical phenomena characterized by large deformation or multi-phase flow analysis, including free surface. Despite the recent implementation of eddy-viscosity model...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573323002528 |
| _version_ | 1797737341002973184 |
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| author | Tae Soo Choi Eung Soo Kim |
| author_facet | Tae Soo Choi Eung Soo Kim |
| author_sort | Tae Soo Choi |
| collection | DOAJ |
| description | Smoothed Particle Hydrodynamics (SPH) is a Lagrangian computational fluid dynamics method that has been widely used in the analysis of physical phenomena characterized by large deformation or multi-phase flow analysis, including free surface. Despite the recent implementation of eddy-viscosity models in SPH methodology, sophisticated turbulent analysis using Lagrangian methodology has been limited due to the lack of computational performance and numerical consistency. In this study, we implement the standard and dynamic Smagorinsky model and dynamic Vreman model as sub-particle scale models based on a weakly compressible SPH solver. The large eddy simulation method is numerically identical to the spatial discretization method of smoothed particle dynamics, enabling the intuitive implementation of the turbulence model. Furthermore, there is no additional filtering process required for physical variables since the sub-grid scale filtering is inherently processed in the kernel interpolation. We simulate lid-driven flow under transition and turbulent conditions as a benchmark. The simulation results show that the dynamic Vreman model produces consistent results with experimental and numerical research regarding Reynolds averaged physical quantities and flow structure. Spectral analysis also confirms that it is possible to analyze turbulent eddies with a smaller length scale using the dynamic Vreman model with the same particle size. |
| first_indexed | 2024-03-12T13:27:16Z |
| format | Article |
| id | doaj.art-3a46cf55649b45209751265503c0dfb2 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-03-12T13:27:16Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-3a46cf55649b45209751265503c0dfb22023-08-25T04:24:00ZengElsevierNuclear Engineering and Technology1738-57332023-09-0155933673382Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES modelsTae Soo Choi0Eung Soo Kim1Seoul National University, Department of Energy System Engineering, Seoul, South KoreaCorresponding author.; Seoul National University, Department of Energy System Engineering, Seoul, South KoreaSmoothed Particle Hydrodynamics (SPH) is a Lagrangian computational fluid dynamics method that has been widely used in the analysis of physical phenomena characterized by large deformation or multi-phase flow analysis, including free surface. Despite the recent implementation of eddy-viscosity models in SPH methodology, sophisticated turbulent analysis using Lagrangian methodology has been limited due to the lack of computational performance and numerical consistency. In this study, we implement the standard and dynamic Smagorinsky model and dynamic Vreman model as sub-particle scale models based on a weakly compressible SPH solver. The large eddy simulation method is numerically identical to the spatial discretization method of smoothed particle dynamics, enabling the intuitive implementation of the turbulence model. Furthermore, there is no additional filtering process required for physical variables since the sub-grid scale filtering is inherently processed in the kernel interpolation. We simulate lid-driven flow under transition and turbulent conditions as a benchmark. The simulation results show that the dynamic Vreman model produces consistent results with experimental and numerical research regarding Reynolds averaged physical quantities and flow structure. Spectral analysis also confirms that it is possible to analyze turbulent eddies with a smaller length scale using the dynamic Vreman model with the same particle size.http://www.sciencedirect.com/science/article/pii/S1738573323002528Smoothed particle hydrodynamicsTurbulenceLarge eddy simulationComputational fluid dynamicsDynamic sub-grid scale modelLid-driven flow |
| spellingShingle | Tae Soo Choi Eung Soo Kim Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models Nuclear Engineering and Technology Smoothed particle hydrodynamics Turbulence Large eddy simulation Computational fluid dynamics Dynamic sub-grid scale model Lid-driven flow |
| title | Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models |
| title_full | Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models |
| title_fullStr | Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models |
| title_full_unstemmed | Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models |
| title_short | Numerical investigation of turbulent lid-driven flow using weakly compressible smoothed particle hydrodynamics CFD code with standard and dynamic LES models |
| title_sort | numerical investigation of turbulent lid driven flow using weakly compressible smoothed particle hydrodynamics cfd code with standard and dynamic les models |
| topic | Smoothed particle hydrodynamics Turbulence Large eddy simulation Computational fluid dynamics Dynamic sub-grid scale model Lid-driven flow |
| url | http://www.sciencedirect.com/science/article/pii/S1738573323002528 |
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