Mixed Convective Influence over the Geometrical Optimization of a Triangular Arrangement of Cylinders in Laminar Flows

Authors

  • Gabriel Moraes Barros Universidade Federal do Rio Grande, Escola de Engenharia.
  • Diego Mion do Carmo Universidade Federal do Rio Grande, Escola de Engenharia.
  • Rafael Cemin Universidade Federal do Rio Grande, Escola de Engenharia.
  • Marcelo Moraes Galarça Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS), Campus Rio Grande.
  • Liércio André Isoldi Universidade Federal do Rio Grande, Escola de Engenharia.
  • Luiz Alberto Oliveira Rocha Departamento de Engenharia Mecânica, Universidade Federal do Rio Grande do Sul (UFRGS), 90050-170, Porto Alegre – RS, Brasil.
  • Elizaldo Domingues dos Santos Universidade Federal do Rio Grande, Escola de Engenharia.

DOI:

https://doi.org/10.14808/sci.plena.2015.081311

Keywords:

Arrange of Cylinders, Geometrical Optimization, Mixed Convection

Abstract

This numerical study is to evaluate the geometric shape of a triangular arrangement of cylinders subjected to transient flows, two-dimensional, incompressible, laminar and mixed convection by means of Constructal Design. The simulations were performed for Reynolds and Prandtl numbers, 100 and 0.71, respectively, evaluating three different numbers of Richardson: Ri = 0.1; 1.0; and 10.0. The mass conservation equations, momentum and energy were solved using the finite volume method (FVM - English: Finite Volume Method). The area occupied by the cylinder is a geometric constraint problem. The main objective is to evaluate the influence of Ri in the effect of the ratio ST/D (cross step on the diameter) on the drag coefficient (CD) and the Nusselt number (NuD) between the cylinders and the surrounding flow, and obtain the optimal geometry of the multi-objective problem. In all cases studied the ratio SL/D (on the longitudinal pitch diameter) was fixed SL/D = 1.5. It was estimated that the variation of the driving mechanism of the flow (caused by the variation of Richardson number) have affected the CD magnitudes and NuD.

Author Biographies

Gabriel Moraes Barros, Universidade Federal do Rio Grande, Escola de Engenharia.

http://lattes.cnpq.br/9087770974893169

Diego Mion do Carmo, Universidade Federal do Rio Grande, Escola de Engenharia.

http://lattes.cnpq.br/5845238436484310

Rafael Cemin, Universidade Federal do Rio Grande, Escola de Engenharia.

http://lattes.cnpq.br/7536419345996081

Marcelo Moraes Galarça, Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS), Campus Rio Grande.

http://lattes.cnpq.br/1660157566796755

Liércio André Isoldi, Universidade Federal do Rio Grande, Escola de Engenharia.

http://lattes.cnpq.br/3761060945802171

Luiz Alberto Oliveira Rocha, Departamento de Engenharia Mecânica, Universidade Federal do Rio Grande do Sul (UFRGS), 90050-170, Porto Alegre – RS, Brasil.

http://lattes.cnpq.br/2535324018884724

Elizaldo Domingues dos Santos, Universidade Federal do Rio Grande, Escola de Engenharia.

http://lattes.cnpq.br/6854950768271660

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Published

2015-08-31

How to Cite

Barros, G. M., do Carmo, D. M., Cemin, R., Galarça, M. M., Isoldi, L. A., Rocha, L. A. O., & dos Santos, E. D. (2015). Mixed Convective Influence over the Geometrical Optimization of a Triangular Arrangement of Cylinders in Laminar Flows. Scientia Plena, 11(8). https://doi.org/10.14808/sci.plena.2015.081311

Issue

Vol. 11 No. 8 (2015): August/Agosto 2015

Section

VI Conferência Sul em Modelagem Computacional

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