Investigation of the Numerical Methodology of a Model Wind Turbine Simulation
The present work aims to investigate different methodologies for the numerical simulation of an upwind three-bladed wind turbine; which is supposed to be a base model to simulate icing in cold climate windmills. That is a model wind turbine for which wind tunnel tests have been completed at the Norw...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2018-01-01
|
| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=45391&issue_ID=248 |
| _version_ | 1811250923289182208 |
|---|---|
| author | N. Tabatabaei M. J. Cervantes C. Trivedi |
| author_facet | N. Tabatabaei M. J. Cervantes C. Trivedi |
| author_sort | N. Tabatabaei |
| collection | DOAJ |
| description | The present work aims to investigate different methodologies for the numerical simulation of an upwind three-bladed wind turbine; which is supposed to be a base model to simulate icing in cold climate windmills. That is a model wind turbine for which wind tunnel tests have been completed at the Norwegian University of Science and Technology (NTNU). Using the assumption of axisymmetry, one-third of rotor has been modeled and periodic boundaries applied to include the effects of other blades. Then the full rotor was studied with transient simulation. To take in the effects of wind turbine wakes, the wind tunnel entrance and exit have been considered 4 and 5 diameters upstream and downstream of the rotor plane, respectively. Furthermore, the effects of tower and nacelle are included in a full-scale transient model of the wind tunnel. Structured hexa mesh has been created and the mesh is refined up to y+=1 in order to resolve the boundary layer. The simulations were performed using standard k-ε, Shear Stress Transport (SST) model and a sophisticated model Scale-Adaptive Simulation (SAS)-SST to investigate the capability of turbulence models at design and off-design conditions The performance parameters, i.e., the loads coefficients and the wake behind the rotor were selected to analyze the flow over the wind turbine. The study was conducted at both design and off-design speeds. The near wake profiles resulted from the transient simulation match well with the experiments at all the speed ranges. For the wake development modelling at high TSR, the present simulation needs to be improved, while at low and moderate TSR the results match with the experiments at far wake too. The agreement between the measurements and CFD is better for the power coefficient than for the thrust coefficient. |
| first_indexed | 2024-04-12T16:12:02Z |
| format | Article |
| id | doaj.art-a5cf099d26f941009823a642732e927f |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-04-12T16:12:02Z |
| publishDate | 2018-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-a5cf099d26f941009823a642732e927f2022-12-22T03:25:53ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722018-01-01113527544.Investigation of the Numerical Methodology of a Model Wind Turbine SimulationN. Tabatabaei0M. J. Cervantes1C. Trivedi2Department of Engineering Sciences and Mathematics, Luleå University of Technology, LuleåLuleå University of Technology and Norwegian University of Science and Technology, TrondheimDepartment of Energy and Process Engineering, Norwegian University of Science and Technology, TrondheimThe present work aims to investigate different methodologies for the numerical simulation of an upwind three-bladed wind turbine; which is supposed to be a base model to simulate icing in cold climate windmills. That is a model wind turbine for which wind tunnel tests have been completed at the Norwegian University of Science and Technology (NTNU). Using the assumption of axisymmetry, one-third of rotor has been modeled and periodic boundaries applied to include the effects of other blades. Then the full rotor was studied with transient simulation. To take in the effects of wind turbine wakes, the wind tunnel entrance and exit have been considered 4 and 5 diameters upstream and downstream of the rotor plane, respectively. Furthermore, the effects of tower and nacelle are included in a full-scale transient model of the wind tunnel. Structured hexa mesh has been created and the mesh is refined up to y+=1 in order to resolve the boundary layer. The simulations were performed using standard k-ε, Shear Stress Transport (SST) model and a sophisticated model Scale-Adaptive Simulation (SAS)-SST to investigate the capability of turbulence models at design and off-design conditions The performance parameters, i.e., the loads coefficients and the wake behind the rotor were selected to analyze the flow over the wind turbine. The study was conducted at both design and off-design speeds. The near wake profiles resulted from the transient simulation match well with the experiments at all the speed ranges. For the wake development modelling at high TSR, the present simulation needs to be improved, while at low and moderate TSR the results match with the experiments at far wake too. The agreement between the measurements and CFD is better for the power coefficient than for the thrust coefficient.http://jafmonline.net/JournalArchive/download?file_ID=45391&issue_ID=248Model wind turbine; CFD; Transient; Wake profile; Turbine performance. |
| spellingShingle | N. Tabatabaei M. J. Cervantes C. Trivedi Investigation of the Numerical Methodology of a Model Wind Turbine Simulation Journal of Applied Fluid Mechanics Model wind turbine; CFD; Transient; Wake profile; Turbine performance. |
| title | Investigation of the Numerical Methodology of a Model Wind Turbine Simulation |
| title_full | Investigation of the Numerical Methodology of a Model Wind Turbine Simulation |
| title_fullStr | Investigation of the Numerical Methodology of a Model Wind Turbine Simulation |
| title_full_unstemmed | Investigation of the Numerical Methodology of a Model Wind Turbine Simulation |
| title_short | Investigation of the Numerical Methodology of a Model Wind Turbine Simulation |
| title_sort | investigation of the numerical methodology of a model wind turbine simulation |
| topic | Model wind turbine; CFD; Transient; Wake profile; Turbine performance. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=45391&issue_ID=248 |
| work_keys_str_mv | AT ntabatabaei investigationofthenumericalmethodologyofamodelwindturbinesimulation AT mjcervantes investigationofthenumericalmethodologyofamodelwindturbinesimulation AT ctrivedi investigationofthenumericalmethodologyofamodelwindturbinesimulation |