NUMERICAL INVESTIGATION OF TURBULENT FORCED CONVECTIVE FLOWS OVER A PAIR OF CIRCULAR CYLINDERS

Authors

  • E. D. dos Santos Universidade Federal do Rio Grande
  • F. M. V. da Silva Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul
  • I. C. Acunha Jr. Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul
  • M. M. Galarça Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul
  • L. A. Isoldi Universidade Federal do Rio Grande
  • L. A. O. Rocha Universidade Federal do Rio Grande do Sul

DOI:

https://doi.org/10.5380/reterm.v11i1-2.62004

Keywords:

forced convection, turbulent flows, LES, pair of cylinders, two arrangements

Abstract

The present study presents large eddy simulation (LES) of forced convective heat transfer in transient, two-dimensional, incompressible turbulent flows over a pair of cylinders with two different arrangements: 1) with two circular cylinders in tandem (both cylinders are in line with the streamwise direction of the flow, β = 0º) and 2) two side-by-side circular cylinders (where both cylinders are placed transversally to the streamwise direction of the flow, β = 90º). The dynamic Smagorinsky model is employed for the sub-grid treatment. The simulations are based on the finite volume method solution for the conservation equations of mass, momentum and energy. Both simulations are performed with Reynolds and Prandtl numbers of ReD = 22000 and Pr = 0.71, respectively. The results showed that the transient fluid dynamic and thermal patterns are strongly affected by the configuration of circular cylinders. The kind of arrangement led to a difference of nearly 20 % for time-averaged Nusselt number (NuD).

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Published

2012-12-31

How to Cite

dos Santos, E. D., da Silva, F. M. V., Acunha Jr., I. C., Galarça, M. M., Isoldi, L. A., & Rocha, L. A. O. (2012). NUMERICAL INVESTIGATION OF TURBULENT FORCED CONVECTIVE FLOWS OVER A PAIR OF CIRCULAR CYLINDERS. Revista De Engenharia Térmica, 11(1-2), 77–84. https://doi.org/10.5380/reterm.v11i1-2.62004

Issue

Vol. 11 No. 1-2 (2012)

Section

Ciência/Science

License

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