Geometrical Assessment of Rectangular Fins at Different Surfaces and Positions on Nusselt Number of Lid-Driven Cavities under Laminar Forced Convection | ||
| Journal of Computational Applied Mechanics | ||
| دوره 55، شماره 4، زمستان 2024، صفحه 744-770 اصل مقاله (2.6 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jcamech.2024.380432.1183 | ||
| نویسندگان | ||
| Eliciana Sias Aldrighi1؛ Giulio Lorenzini* 2؛ Giovani Dambros Telli3؛ Flávia Schwarz Franceschini Zinani4؛ Liércio André Isoldi1؛ Luiz Alberto Oliveira Rocha1، 5، 6؛ Elizaldo Domingues dos Santos1، 6 | ||
| 1Graduate Program in Computational Modeling, Universidade Federal do Rio Grande, Itália Avenue, km 8, 96201-900, Rio Grande, Brazil | ||
| 2Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 181/A, 43124, Parma, Italy | ||
| 3Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas 1130, 95070-560, Caxias do Sul, Brazil | ||
| 4Institute of Hydraulic Research, Universidade Federal do Rio Grande do Sul (IPH-UFRGS), Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, Brazil | ||
| 5Institute of Earth Sciences, Complex Fluid Systems Lab, Rua Romao Ramalho 59, 7000-671 Evora, Portugal | ||
| 6Mechanical Engineering Graduate Program, Universidade Federal do Rio Grande do Sul – UFRGS, Rua Sarmento Leite 425, 90040-001 Porto Alegre, Brazil | ||
| چکیده | ||
| This work focused on the geometric assessment by the lens of the Constructal Design of a rectangular fin placed at different surfaces and positions of lid-driven cavities under laminar forced convection. This study aims to maximize the Nusselt number (NuH) from the isothermal fin for Reynolds numbers (ReH) ranging from 10 to 1000 and a fixed Prandtl equal to 0.71. The fin was placed at the lower, upstream, and downstream cavity surfaces in five positions (S* = 0.1; 0.3; 0.5; 0.7; 0.9). The domain presents two constraints: the cavity area and the ratio fin area to cavity area kept constant for all cases (φ = 0.05). The degrees of freedom explored to maximize the Nusselt number were the ratio between the height and length of the fin (H1/L1) and the fin position along each cavity surface. The results indicated that the fin geometry and positions significantly affected the Nusselt number. The highest Nusselt number was achieved for the fin positioned on the downstream cavity surface with H1/L1 = 2.0 and S* = 0.9, improving the Nusselt number by 63.1% and 5.8% compared to the optimal shapes in the lower and upstream cavity surfaces. | ||
| کلیدواژهها | ||
| Rectangular fins؛ lid-driven cavity؛ numerical study؛ forced convection؛ constructal design | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 488 تعداد دریافت فایل اصل مقاله: 943 |
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