Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method
In this paper, the numerical simulation of incompressible flows around a fish model at low Reynolds number using the seamless virtual boundary method is presented. In order to satisfy the velocity conditions on the virtual boundary points, the forcing term is added not only on the grid points near t...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2009-06-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/4/3/4_3_500/_pdf/-char/en |
| _version_ | 1819364524994592768 |
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| author | Hidetoshi NISHIDA Kyohei TAJIRI |
| author_facet | Hidetoshi NISHIDA Kyohei TAJIRI |
| author_sort | Hidetoshi NISHIDA |
| collection | DOAJ |
| description | In this paper, the numerical simulation of incompressible flows around a fish model at low Reynolds number using the seamless virtual boundary method is presented. In order to satisfy the velocity conditions on the virtual boundary points, the forcing term is added not only on the grid points near the boundary but also on the grid points inside the boundary in the seamless virtual boundary method, so that the smooth physical quantities can be obtained. The present approach is verified by the flows around a 2D oscillating circular cylinder and a sphere. The flows around the stationary and swimming fish models are simulated for application to the more complicated flow geometry with moving boundary. These results show that the flows with the stationary and moving bodies can be predicted precisely. Then, it is concluded that the present seamless virtual boundary method is very promising for the numerical simulation of incompressible flows with the complicated geometry and the moving boundary. |
| first_indexed | 2024-12-24T23:00:19Z |
| format | Article |
| id | doaj.art-431402a8a9e2463ca7ac0546ea0dc670 |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-12-24T23:00:19Z |
| publishDate | 2009-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-431402a8a9e2463ca7ac0546ea0dc6702022-12-21T16:35:09ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582009-06-014350051110.1299/jfst.4.500jfstNumerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary MethodHidetoshi NISHIDA0Kyohei TAJIRI1Department of Mechanical and System Engineering, Graduate School of Science and Technology, Kyoto Institute of TechnologyDepartment of Mechanical and System Engineering, Graduate School of Science and Technology, Kyoto Institute of TechnologyIn this paper, the numerical simulation of incompressible flows around a fish model at low Reynolds number using the seamless virtual boundary method is presented. In order to satisfy the velocity conditions on the virtual boundary points, the forcing term is added not only on the grid points near the boundary but also on the grid points inside the boundary in the seamless virtual boundary method, so that the smooth physical quantities can be obtained. The present approach is verified by the flows around a 2D oscillating circular cylinder and a sphere. The flows around the stationary and swimming fish models are simulated for application to the more complicated flow geometry with moving boundary. These results show that the flows with the stationary and moving bodies can be predicted precisely. Then, it is concluded that the present seamless virtual boundary method is very promising for the numerical simulation of incompressible flows with the complicated geometry and the moving boundary.https://www.jstage.jst.go.jp/article/jfst/4/3/4_3_500/_pdf/-char/encfdcartesian approachseamless virtual boundary methodmoving boundaryincompressible flow |
| spellingShingle | Hidetoshi NISHIDA Kyohei TAJIRI Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method Journal of Fluid Science and Technology cfd cartesian approach seamless virtual boundary method moving boundary incompressible flow |
| title | Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method |
| title_full | Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method |
| title_fullStr | Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method |
| title_full_unstemmed | Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method |
| title_short | Numerical Simulation of Incompressible Flows around a Fish Model at Low Reynolds Number Using Seamless Virtual Boundary Method |
| title_sort | numerical simulation of incompressible flows around a fish model at low reynolds number using seamless virtual boundary method |
| topic | cfd cartesian approach seamless virtual boundary method moving boundary incompressible flow |
| url | https://www.jstage.jst.go.jp/article/jfst/4/3/4_3_500/_pdf/-char/en |
| work_keys_str_mv | AT hidetoshinishida numericalsimulationofincompressibleflowsaroundafishmodelatlowreynoldsnumberusingseamlessvirtualboundarymethod AT kyoheitajiri numericalsimulationofincompressibleflowsaroundafishmodelatlowreynoldsnumberusingseamlessvirtualboundarymethod |