Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam
A rod-airfoil is a benchmark configuration for simulating Airfoil-Turbulence Interaction Noise (ATIN). The numerical simulation is modelled using unsteady Detached Eddy Simulation (DES). The grid refinement involves two stages of assessments. The first compares the sensitivity of two reasonable esti...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2019
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| Online Access: | http://eprints.utm.my/90005/1/SitiRuhliahLizarose2019_GridConvergenceStudyforDetached.pdf |
| _version_ | 1796864942422360064 |
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| author | Samion, S. R. L. Shaharuddin, N. H. Mat Ali, M. S. |
| author_facet | Samion, S. R. L. Shaharuddin, N. H. Mat Ali, M. S. |
| author_sort | Samion, S. R. L. |
| collection | ePrints |
| description | A rod-airfoil is a benchmark configuration for simulating Airfoil-Turbulence Interaction Noise (ATIN). The numerical simulation is modelled using unsteady Detached Eddy Simulation (DES). The grid refinement involves two stages of assessments. The first compares the sensitivity of two reasonable estimated cells to the flow behaviours of the case. Based on the finding from the first stage, further grid refinement is proceed in stage two. In stage two, a minimum of three different grid resolutions are considered; the fine, medium and coarse grids in order to investigate the grid independency. Richardson extrapolation and Grid Convergence Index (GCI) are introduced to quantitatively evaluate the grid independency. Based on the results between those three different grids, a monotonic convergence criterion has been achieved. The reduction in GCI value indicates that the grid convergence error has been significantly reduced, in which the fine grid has a GCI value is around less than 0.5%. |
| first_indexed | 2024-03-05T20:49:28Z |
| format | Conference or Workshop Item |
| id | utm.eprints-90005 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:49:28Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | utm.eprints-900052021-03-29T05:57:40Z http://eprints.utm.my/90005/ Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam Samion, S. R. L. Shaharuddin, N. H. Mat Ali, M. S. T Technology (General) A rod-airfoil is a benchmark configuration for simulating Airfoil-Turbulence Interaction Noise (ATIN). The numerical simulation is modelled using unsteady Detached Eddy Simulation (DES). The grid refinement involves two stages of assessments. The first compares the sensitivity of two reasonable estimated cells to the flow behaviours of the case. Based on the finding from the first stage, further grid refinement is proceed in stage two. In stage two, a minimum of three different grid resolutions are considered; the fine, medium and coarse grids in order to investigate the grid independency. Richardson extrapolation and Grid Convergence Index (GCI) are introduced to quantitatively evaluate the grid independency. Based on the results between those three different grids, a monotonic convergence criterion has been achieved. The reduction in GCI value indicates that the grid convergence error has been significantly reduced, in which the fine grid has a GCI value is around less than 0.5%. 2019 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/90005/1/SitiRuhliahLizarose2019_GridConvergenceStudyforDetached.pdf Samion, S. R. L. and Shaharuddin, N. H. and Mat Ali, M. S. (2019) Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam. In: 2018 4th International Conference on Mechanical and Aeronautical Engineering, ICMAE 2018, 13-16 Dec 2018, Bangkok, Thailand. https://dx.doi.org/10.1088/1757-899X/491/1/012023 |
| spellingShingle | T Technology (General) Samion, S. R. L. Shaharuddin, N. H. Mat Ali, M. S. Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam |
| title | Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam |
| title_full | Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam |
| title_fullStr | Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam |
| title_full_unstemmed | Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam |
| title_short | Grid convergence study for detached-eddy simulation of flow over rod-airfoil configuration using openfoam |
| title_sort | grid convergence study for detached eddy simulation of flow over rod airfoil configuration using openfoam |
| topic | T Technology (General) |
| url | http://eprints.utm.my/90005/1/SitiRuhliahLizarose2019_GridConvergenceStudyforDetached.pdf |
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