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Turbulence dissipation in a free-surface jet of water and its effect on local impingement heat transfer from a heated surface. 1. Flow structure. 2. Local heat transfer.

Author(s) : WOLF D. H., VISKANTA R., INCROPERA F. P.

Type of article: Article

Summary

Employing a thermal anemometer system, measurements of the mean velociy and turbulence intensity are reported at different streamwise and spanwise locations throughout the jet. In addition to qualitative interpretations, correlations are developed for both the onset of transition to turbulence and the dimensionless convection coefficient at the stagnation point. Higher levels of jet turbulence are shown to induce transition to a turbulent boundary layer at smaller streamwise distances from the stagnation point. The effect of streamwise turbulence intensity on the convection coefficient is shown to scale approximately as the one-quarter power.

Details

  • Original title: Turbulence dissipation in a free-surface jet of water and its effect on local impingement heat transfer from a heated surface. 1. Flow structure. 2. Local heat transfer.
  • Record ID : 1996-0770
  • Languages: English
  • Source: J. Heat Transf. - vol. 117 - n. 1
  • Publication date: 1995/02
  • Document available for consultation in the library of the IIR headquarters only.

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