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Generation of longitudinal streamwise vortices: a device for improving heat exchanger design.

Author(s) : BISWAS G., DEB P., BISWAS S.

Type of article: Article

Summary

Laminar flow and heat transfer characteristics in a rectangular channel, containing built-in vortex generators of both the slender delta-wing and winglet-pair type, were analyzed by means of solution of the full Navier-Stokes and energy equations. From a heat transfer point of view, the delta-wing generator is found to be more effective than the winglet-pair. However, most convective heat transfer processes encounter two types of loss, namely, losses due to fluid friction and those due to heat transfer across finite temperature gradient. Because these two phenomena are manifestations of irreversibility, an evaluation of the augmentation techniques is also made from a thermodynamic viewpoint.

Details

  • Original title: Generation of longitudinal streamwise vortices: a device for improving heat exchanger design.
  • Record ID : 1995-2849
  • Languages: English
  • Source: J. Heat Transf. - vol. 116 - n. 3
  • Publication date: 1994/08
  • Document available for consultation in the library of the IIR headquarters only.

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