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Inverted fins: geometric optimisation of the intrusion into a conducting wall.

Author(s) : BISERNI C., ROCHA L. A. O., BEJAN A.

Type of article: Article

Summary

In this article the authors consider the optimisation of the shape of a cavity that intrudes into a solid conducting wall. This intrusion may be regarded as a "negative fin", i.e. the outside-in version of a conductive fin the shape of which is to be optimised. The objective is to minimise the global thermal resistance between the solid and the cavity. The cavity is rectangular, with fixed volume and variable aspect ratio. The cavity shape is optimized for two sets of thermal conditions for the solid wall: uniform heat generation, and uniform heat flux on the outer surfaces of the solid wall. The optimised cavity shape is practically independent of the thermal conditions. The cavity shape is optimal when it penetrates the conducting wall completely. The authors also optimised a more complex intrusion: a T-shaped cavity. The performance of the T-shaped cavity is superior to that of the finger-shaped cavity.

Details

  • Original title: Inverted fins: geometric optimisation of the intrusion into a conducting wall.
  • Record ID : 2004-2139
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 12-13
  • Publication date: 2004/06

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