Simulation of Unsteady Flow Around a Cylinder
In this paper, the phenomena of vortex shedding from the circular cylinder surface has been studied at several Reynolds Numbers (40≤Re≤ 300).The 2D, unsteady, incompressible, Laminar flow, continuity and Navier Stokes equations have been solved numerically by using CFD Package FLUENT. In thi...
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Wasit University
2015-10-01
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| Series: | Wasit Journal of Engineering Sciences |
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| Online Access: | https://ejuow.uowasit.edu.iq/index.php/ejuow/article/view/38 |
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| author | Ridha Alwan Ahmed |
| author_facet | Ridha Alwan Ahmed |
| author_sort | Ridha Alwan Ahmed |
| collection | DOAJ |
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In this paper, the phenomena of vortex shedding from the circular cylinder surface has been studied at several Reynolds Numbers (40≤Re≤ 300).The 2D, unsteady, incompressible, Laminar flow, continuity and Navier Stokes equations have been solved numerically by using CFD Package FLUENT. In this package PISO algorithm is used in the pressure-velocity coupling.
The numerical grid is generated by using Gambit program. The velocity and pressure fields are obtained upstream and downstream of the cylinder at each time and it is also calculated the mean value of drag coefficient and value of lift coefficient .The results showed that the flow is strongly unsteady and unsymmetrical at Re>60. The results have been compared with the available experiments and a good agreement has been found between them
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| format | Article |
| id | doaj-art-165c44f4022b4336bc803000776509a3 |
| institution | DOAJ |
| issn | 2305-6932 2663-1970 |
| language | English |
| publishDate | 2015-10-01 |
| publisher | Wasit University |
| record_format | Article |
| series | Wasit Journal of Engineering Sciences |
| spelling | doaj-art-165c44f4022b4336bc803000776509a32025-08-20T02:39:25ZengWasit UniversityWasit Journal of Engineering Sciences2305-69322663-19702015-10-013210.31185/ejuow.Vol3.Iss2.38Simulation of Unsteady Flow Around a CylinderRidha Alwan Ahmed0Al-Mustansiriyah University College of Engineering Mechanical dept In this paper, the phenomena of vortex shedding from the circular cylinder surface has been studied at several Reynolds Numbers (40≤Re≤ 300).The 2D, unsteady, incompressible, Laminar flow, continuity and Navier Stokes equations have been solved numerically by using CFD Package FLUENT. In this package PISO algorithm is used in the pressure-velocity coupling. The numerical grid is generated by using Gambit program. The velocity and pressure fields are obtained upstream and downstream of the cylinder at each time and it is also calculated the mean value of drag coefficient and value of lift coefficient .The results showed that the flow is strongly unsteady and unsymmetrical at Re>60. The results have been compared with the available experiments and a good agreement has been found between them https://ejuow.uowasit.edu.iq/index.php/ejuow/article/view/38vortex sheddingcylinderunsteady statedrag coefficient |
| spellingShingle | Ridha Alwan Ahmed Simulation of Unsteady Flow Around a Cylinder Wasit Journal of Engineering Sciences vortex shedding cylinder unsteady state drag coefficient |
| title | Simulation of Unsteady Flow Around a Cylinder |
| title_full | Simulation of Unsteady Flow Around a Cylinder |
| title_fullStr | Simulation of Unsteady Flow Around a Cylinder |
| title_full_unstemmed | Simulation of Unsteady Flow Around a Cylinder |
| title_short | Simulation of Unsteady Flow Around a Cylinder |
| title_sort | simulation of unsteady flow around a cylinder |
| topic | vortex shedding cylinder unsteady state drag coefficient |
| url | https://ejuow.uowasit.edu.iq/index.php/ejuow/article/view/38 |
| work_keys_str_mv | AT ridhaalwanahmed simulationofunsteadyflowaroundacylinder |