Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition
Due to the geometrical similarity to many engineering structures, the flow characteristics around the square cylinder have been studied for some time using the experimental or Computational Fluid Dynamics (CFD) technique. However in the past research the inlet boundary is assumed to be steady for si...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2010-01-01
|
| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=15247&issue_ID=201 |
| _version_ | 1818065379456450560 |
|---|---|
| author | Z. Liu |
| author_facet | Z. Liu |
| author_sort | Z. Liu |
| collection | DOAJ |
| description | Due to the geometrical similarity to many engineering structures, the flow characteristics around the square cylinder have been studied for some time using the experimental or Computational Fluid Dynamics (CFD) technique. However in the past research the inlet boundary is assumed to be steady for simplifying the simulation model, which is conflict with real flow field. To overcome such problem, in this paper, the time varying inlet boundary condition based on autoregressive moving average (ARMA) model is proposed, based on which this inlet boundary generation procedure is introduced. To study the flow characteristics around the square cylinder, a 2D large eddy simulation procedure numerical description is introduced, and different turbulence intensity will be considered at the inlet boundary. The general aerodynamic parameters such as lift coefficient and drag coefficient and velocity component time averaged values along the centre line of the computational domain are discussed. To study the aerodynamic parameters in the frequency domain, the velocity spectrum at different position around the square cylinder will be discussed. |
| first_indexed | 2024-12-10T14:50:57Z |
| format | Article |
| id | doaj.art-f7ddb237e60442dd9734e3afec06bdde |
| institution | Directory Open Access Journal |
| issn | 1735-3645 |
| language | English |
| last_indexed | 2024-12-10T14:50:57Z |
| publishDate | 2010-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-f7ddb237e60442dd9734e3afec06bdde2022-12-22T01:44:27ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-36452010-01-01313545.Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary ConditionZ. LiuDue to the geometrical similarity to many engineering structures, the flow characteristics around the square cylinder have been studied for some time using the experimental or Computational Fluid Dynamics (CFD) technique. However in the past research the inlet boundary is assumed to be steady for simplifying the simulation model, which is conflict with real flow field. To overcome such problem, in this paper, the time varying inlet boundary condition based on autoregressive moving average (ARMA) model is proposed, based on which this inlet boundary generation procedure is introduced. To study the flow characteristics around the square cylinder, a 2D large eddy simulation procedure numerical description is introduced, and different turbulence intensity will be considered at the inlet boundary. The general aerodynamic parameters such as lift coefficient and drag coefficient and velocity component time averaged values along the centre line of the computational domain are discussed. To study the aerodynamic parameters in the frequency domain, the velocity spectrum at different position around the square cylinder will be discussed.http://jafmonline.net/JournalArchive/download?file_ID=15247&issue_ID=201LES Random Inlet ARMA CFD |
| spellingShingle | Z. Liu Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition Journal of Applied Fluid Mechanics LES Random Inlet ARMA CFD |
| title | Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition |
| title_full | Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition |
| title_fullStr | Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition |
| title_full_unstemmed | Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition |
| title_short | Square Cylinder Large Eddy Simulation Based on Random Inlet Boundary Condition |
| title_sort | square cylinder large eddy simulation based on random inlet boundary condition |
| topic | LES Random Inlet ARMA CFD |
| url | http://jafmonline.net/JournalArchive/download?file_ID=15247&issue_ID=201 |
| work_keys_str_mv | AT zliu squarecylinderlargeeddysimulationbasedonrandominletboundarycondition |