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TWO-PHASE DROPLET FLOW CONVECTIVE AND RADIATIVE HEAT TRANSFER.

Author(s) : CHUNG J. N., OLAFSSON S. I.

Type of article: Article

Summary

NUMERICAL SOLUTIONS OF CONVECTIVE AND RADIATIVE HEAT TRANSFER TO A TURBULENT TWO-PHASE DROPLET FLOW IN A TUBE ARE PRESENTED FOR SYSTEMS OF RELATIVELY HIGH PRESSURE AND HIGH WALL HEAT FLUX. THE HIGHLY NONLINEAR ENERGY EQUATION OF THE VAPOR PHASE WITH DROPLETS MODELLED AS HEAT SINKS IS SOLVED NUMERICALLY FOR THE THERMAL ENTRANCE REGION. RADIATION HEAT TRANSFER AMONG THE WALL, THE VAPOR AND THE DROPLET ARE INCLUDED WITH VAPOR CONSIDERED AS AN OPTICALLY THICK MEDIUM. FOR TYPICAL CONDITIONS INVESTIGATED, THE EFFECTIVENESS OF THE DROPLETS DECREASES WITH INCREASING DROPLET SIZES BUT THE EFFECTS OF RADIATION BECOME MORE IMPORTANT FOR LARGER DROPLETS. THE INCLUSION OF RADIATION GENERALLY LOWERS THE WALL TEMPERATURE BY 15%.

Details

  • Original title: TWO-PHASE DROPLET FLOW CONVECTIVE AND RADIATIVE HEAT TRANSFER.
  • Record ID : 1985-0502
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 27 - n. 6
  • Publication date: 1984/06

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