| Structure of Channel Flows with Surface Mounted Ribs |
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| 作者姓名： | Gérard J. POITRAS Laurent-Emmanuel BRIZZI Yves GAGNON |
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| 作者单位： | Université de Moncton，Moncton (NB)，Canada，Laboratoire d'études aérodynamiques，Université de Poitiers，86960 Futuroscope，France，Université de Moncton，Edmundston (NB)，Canada |
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| 摘 要： | The flow inside a channel with surface mounted ribs is studied by numerical simulation and experimental flow visualization. Both the geometry with one rib and the geometry with two ribs, placed perpendicular to the flow, are studied, with particular emphasis on the effect of the variation of the distance between the ribs on the structure of the flow. Results show that, for Reynolds number flows of 400 and 1000 (based on the uniform incoming velocity and the height of the ribs), the flow reattaches between the ribs when they are separated by distances of 12h (h being the height of the ribs) and 6h, respectively. In this respect, however, the numerical results for the Reynolds number flow of 1000 are in contradiction with published results.
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Structure of channel flows with surface mounted ribs |
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| Gérard?J.?Poitras,Laurent-Emmanuel?Brizzi,Yves?Gagnon.Structure of Channel Flows with Surface Mounted Ribs[J].Journal of Thermal Science,2004,13(3):213-219. |
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| Authors: | Gérard J Poitras Laurent-Emmanuel Brizzi Yves Gagnon |
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| Affiliation: | (1) Université de Moncton, Moncton, NB, Canada;(2) Laboratoire d’études aérodynamiques, Université de Poitiers, 86960 Futuroscope, France;(3) Université de Moncton, Edmundston, NB, Canada |
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| Abstract: | The flow inside a channel with surface mounted ribs is studied by numerical simulation and experimental flow visualization. Both the geometry with one rib and the geometry with two ribs, placed perpendicular to the flow, are studied, with particular emphasis on the effect of the variation of the distance between the ribs on the structure of the flow. Results show that, for Reynolds number flows of 400 and 1000 (based on the uniform incoming velocity and the height of the ribs), the flow reattaches between the ribs when they are separated by distances of 12h (h being the height of the ribs) and 6h, respectively. In this respect, however, the numerical results for the Reynolds number flow of 1000 are in contradiction with published results. |
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| Keywords: | vortex methods flow visualization channel flows ribs |
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