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Effects of variable thermophysical properties on flow and energy separation in a vortex tube.

Author(s) : OUADHA A., BAGHDAD M., ADDAD Y.

Type of article: Article, IJR article

Summary

A numerical study has been conducted to investigate the effects of variable fluid properties on the prediction of a basic tube vortex design. Beforehand, a literature review is presented to highlight some of the recent advances in the enhancements of the device design and its efficiency. The three-dimensional computations with constant and variable properties revealed that the constant thermophysical assumption might not have a dramatic effect if the aim is to predict global values only, but extra caution should be taken for an in-depth flow assessment. The exergy analysis conducted suggests that the highest exergy efficiency, for the current device design, ranges from 38% to 46% depending on the inlet pressure value. Based on the current numerical analysis; rather large exergy losses are due to irreversibility occurring at either; the lowest or the highest cold mass fraction boundary conditions.

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Pages: 2426-2437

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Details

  • Original title: Effects of variable thermophysical properties on flow and energy separation in a vortex tube.
  • Record ID : 30009862
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 8
  • Publication date: 2013/12

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