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Concurrent turbulent mixed convection heat and mass transfer in a falling film of water inside a vertical heated tube.

Author(s) : FEDDAOUI M., MIR A., BELAHMIDI E.

Type of article: Article

Summary

A detailed numerical study was conducted in order to analyse the combined buoyancy effects of thermal and mass diffusion on the turbulent mixed convection tube flows. Numerical results for an air-water system are presented under different conditions. A low Reynolds number turbulent model is used with combined heat and mass transfer analysis in a vertical heated tube. The local heat fluxes, Nusselt and Sherwood numbers are reported to obtain an understanding of the physical phenomena. Predicted results show that better heat transfer results for a higher gas flow Reynolds number, a higher heat flux or a lower inlet water flow. Additionally, the results indicate that the heat convection by the flowing water film becomes the main mechanism for heat removal from the wall.

Details

  • Original title: Concurrent turbulent mixed convection heat and mass transfer in a falling film of water inside a vertical heated tube.
  • Record ID : 2004-0512
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 46 - n. 18
  • Publication date: 2003/08

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