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Optimization study and heat transfer comparison of staggered circular and elliptic tubes in forced convection.

Author(s) : MATOS R. S., VARGAS J. V. C., LAURSEN T. A., et al.

Type of article: Article

Summary

The finite element method was used to discretize the fluid flow and heat transfer governing equations and a 2-D isoparametric, four-nodded, linear element was implemented for a finite element analysis program. The numerical results for the equilateral triangle staggering configuration were then validated qualitatively by means of direct comparison to previously published experimental results for circular tubes. Next, a numerical geometric optimization was conducted both for circular and elliptic arrangements. Results are reported for air. A relative heat transfer gain of up to 13% is observed in the optimal elliptical arrangement, as compared to the optimal circular one. This gain, combined with a relative pressure drop reduction of up to 25% shows that the elliptical arrangement has the potential for a considerably better overall performance than the traditional circular one.

Details

  • Original title: Optimization study and heat transfer comparison of staggered circular and elliptic tubes in forced convection.
  • Record ID : 2002-1776
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 44 - n. 20
  • Publication date: 2001/10

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