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A numerical investigation of entropy generation in the entrance region of curved pipes at constant wall temperature

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  • Amani, E.
  • Nobari, M.R.H.

Abstract

In this study, developing incompressible viscous flow and heat transfer in the curved pipes are studied numerically to analyze the entropy generation and thermodynamic optimization in the entrance region at a constant wall temperature. The governing equations including continuity, momentum and energy equations are solved using a second order finite difference method based on the projection algorithm. Entropy generation and optimal Reynolds number calculation based on the entropy generation minimization are carried out for two cases considering the two groups of non-dimensional parameters both numerically and analytically. The comparison of the numerical results in the entrance region with the analytical ones in the fully developed region indicates that both solutions predict nearly the same optimal Reynolds numbers, specially, for the first group of the non-dimensional parameters.

Suggested Citation

  • Amani, E. & Nobari, M.R.H., 2011. "A numerical investigation of entropy generation in the entrance region of curved pipes at constant wall temperature," Energy, Elsevier, vol. 36(8), pages 4909-4918.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:8:p:4909-4918
    DOI: 10.1016/j.energy.2011.05.035
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    References listed on IDEAS

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    Cited by:

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    4. Nobari, M.R.H. & Kazemi, S. & Nourian, V. & Adib, M., 2016. "A numerical investigation of incompressible viscous flow in a helical square annulus," Applied Mathematics and Computation, Elsevier, vol. 277(C), pages 127-141.
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    6. Hajmohammadi, M.R. & Eskandari, H. & Saffar-Avval, M. & Campo, A., 2013. "A new configuration of bend tubes for compound optimization of heat and fluid flow," Energy, Elsevier, vol. 62(C), pages 418-424.
    7. Mwesigye, Aggrey & Bello-Ochende, Tunde & Meyer, Josua P., 2013. "Numerical investigation of entropy generation in a parabolic trough receiver at different concentration ratios," Energy, Elsevier, vol. 53(C), pages 114-127.

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