On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids
In this paper, the static interaction of a train of three cylinders in a Bingham fluid is studied numerically using Computational Fluid Dynamics. The variation of drag forces for the cylinders in several configurations is investigated. Positions of the particles in relation to the reference particle...
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| Format: | Article |
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MDPI AG
2019-05-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/4/2/93 |
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| author | Naser Hamedi Lars-Göran Westerberg |
| author_facet | Naser Hamedi Lars-Göran Westerberg |
| author_sort | Naser Hamedi |
| collection | DOAJ |
| description | In this paper, the static interaction of a train of three cylinders in a Bingham fluid is studied numerically using Computational Fluid Dynamics. The variation of drag forces for the cylinders in several configurations is investigated. Positions of the particles in relation to the reference particle are recognized by the separation distance between the cylinders. A steady state field is considered, with Bingham numbers between 5 and 150. Several separation distances (<i>d</i>) were considered, such that 2.0<i>D</i> ≤ <i>d</i> ≤ 6.0<i>D</i> where <i>D</i> is the cylinder diameter. The Reynolds number was chosen in the range of 5 ≤ <i>Re</i> ≤ 40. In particular, the effect of the separation distance, Reynolds number and Bingham number on the shape and size of the unyielded regions was investigated. The functional dependence of this region and the drag coefficient is explored. The present results reveal the significant influence of the gap between the cylinders on the drag force and the shape of the unyielded regions surrounding the cylinders. It was found that there are several configurations in which the drag forces over the first and the third cylinders are almost equal depending on variation of the <i>Bi</i>, <i>Re</i> and the separation distance. |
| first_indexed | 2024-12-11T21:03:33Z |
| format | Article |
| id | doaj.art-d49caaf501f145489a78855c5b902fcd |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-12-11T21:03:33Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-d49caaf501f145489a78855c5b902fcd2022-12-22T00:50:55ZengMDPI AGFluids2311-55212019-05-01429310.3390/fluids4020093fluids4020093On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic FluidsNaser Hamedi0Lars-Göran Westerberg1Department of Engineering Sciences and Mathematics, Division of Fluid and Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, SwedenDepartment of Engineering Sciences and Mathematics, Division of Fluid and Experimental Mechanics, Luleå University of Technology, SE-971 87 Luleå, SwedenIn this paper, the static interaction of a train of three cylinders in a Bingham fluid is studied numerically using Computational Fluid Dynamics. The variation of drag forces for the cylinders in several configurations is investigated. Positions of the particles in relation to the reference particle are recognized by the separation distance between the cylinders. A steady state field is considered, with Bingham numbers between 5 and 150. Several separation distances (<i>d</i>) were considered, such that 2.0<i>D</i> ≤ <i>d</i> ≤ 6.0<i>D</i> where <i>D</i> is the cylinder diameter. The Reynolds number was chosen in the range of 5 ≤ <i>Re</i> ≤ 40. In particular, the effect of the separation distance, Reynolds number and Bingham number on the shape and size of the unyielded regions was investigated. The functional dependence of this region and the drag coefficient is explored. The present results reveal the significant influence of the gap between the cylinders on the drag force and the shape of the unyielded regions surrounding the cylinders. It was found that there are several configurations in which the drag forces over the first and the third cylinders are almost equal depending on variation of the <i>Bi</i>, <i>Re</i> and the separation distance.https://www.mdpi.com/2311-5521/4/2/93particle interactionviscoplastic fluidBingham fluidcomputational fluid dynamics |
| spellingShingle | Naser Hamedi Lars-Göran Westerberg On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids Fluids particle interaction viscoplastic fluid Bingham fluid computational fluid dynamics |
| title | On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids |
| title_full | On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids |
| title_fullStr | On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids |
| title_full_unstemmed | On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids |
| title_short | On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids |
| title_sort | on the interaction of side by side circular cylinders in viscoplastic fluids |
| topic | particle interaction viscoplastic fluid Bingham fluid computational fluid dynamics |
| url | https://www.mdpi.com/2311-5521/4/2/93 |
| work_keys_str_mv | AT naserhamedi ontheinteractionofsidebysidecircularcylindersinviscoplasticfluids AT larsgoranwesterberg ontheinteractionofsidebysidecircularcylindersinviscoplasticfluids |