Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Development of Heat Transfer and Evaporation Correlations for the Turbulent Natural Convection in the Vertical Channel by Using Numerical Analysis

  • Published : 1996.12.01
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Abstract

Theoretical and numerical study on heat transfer and evaporation in the vertical channel has been carried out and basic correlations have been derived for the heat transfer evaluation of PCCS. Analysis program was developed with low-Reynolds-number k-$\varepsilon$ model and surface transfer rates were calculated for the turbulent natural convection in the vertical channel. In relation to dry cooling by buoyancy-driven air, first, the system parameters which govern overall heat transfer rate are determined through the adequate nondimensionalization procedure. After comparison with existing experimental data, numerical results are used to derive heat transfer correlation by sensitivity calculations. In relation to wet cooling by falling water film, numerical analysis are carried out for evaporation process with real film surface conditions and evaporation correlation is derived through analogy concept and correction factors.

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References

  1. ANP'92 International Conference on Design and Safety of Advanced Nuclear Power Plants The Westinghouse AP600 Passive Containment Cooling Test Analysis Program Van De Venne, T.(et al)
  2. EBASCO, Seoul National Univ. Seminar Note Passive Containment Cooling
  3. Proceeding of International Conference on "New Trends in Nuclear System Thermohydraulics" Heat Transfer form a Plate Cooled by a water film with Counter-current Air Flow W. Ambrosini;F. Mariotti;F. Oriolo;P. Vigni
  4. J. Heat Transfer v.106 Observed Flow Reversal and Measured- Predicted Nusselt Numbers for Natural Convection in a One-sided Heated Vertical Channel E.M. Sparrow;(et al)
  5. Trans. ASME Tests of Free Convection in a Partially Enclosed Space Between Two Heated Vertical Plates Robert Siegel;R. H. Norris
  6. Study of the Natural Convection Between Two Plane, Vertical, Parallel and Isothermal Plates G. Hugot
  7. Proc. 8th int. Heat Transfer Conf. v.14 Turbulent Free Convection Heat Transfer from Vertical Parallel Plates M. Miyamoto;Y. Katoh
  8. Numerical Heat Transfer Transient Buoyancy Induced Flow Through a Heated, Vertical Channel of Finite Height T.S. Chang;T.F. Lin
  9. Numerical Heat Transfer v.16 Numerical Study of Turbulent Natural Convection in an Innovative Air Cooling System F.B. Cheung;D.Y. Sohn
  10. Phd. Thesis, Seoul National Univ. A Theoretical Modeling of Heat Transfer and Evaporation in the Vertical Channel Related to PCCS, and Development of Correlations H.O. Kang
  11. Int. J. Heat Mass Transfer v.32 no.1 Comparison of Turbulence Models for the Natural Convection Boundary Layer along a Heated Vertical Plate R.A. W.M. Henkes;C.J. Hoogendoorn
  12. Proc. 8th Int. Heat Transfer Conf. v.14 Laminar Free Convection with Variable Fluid Properties in Vertical Ducts of Different Cross-Sectional Shapes T. Aihara;(et al)
  13. J. Heat Mass Transfer v.15 The Prediction of Laminarization with a Two-equation Model of Turbulence W.P. Jones;B.E. Launder
  14. J. Heat Transfer v.108 Numerical Calculation of Three-dimensional Turbulent Natural Convection in a Cubical Enclosure Using a Two-equation Model for Turbulence H. Ozoe;(et al)
  15. Physica v.9 Heat Dissipation of Parallel Plates by Free Convection W. Elenbaas
  16. Numerical Heat Transfer and Fluid Flow S.V. Patankar
  17. Numer. Heat Transfer v.4 A Modified Strongly Implicit Procedure for the Numerical Solution of Field Problems G.E. Shneider.;M. Zedan
  18. Int. J. Heat Mass Transfer v.22 A Theory for Natural Convection Turbulent Boundary Layers Next to Heated Vertical Surfaces W.K. George;S.P. Capp
  19. Int. J. Heat Mass Trasfer v.28 Vertical-channel Natural Convection Spanning between the Fully-developed Limit and the Single-plate boundary-layer Limit E.M. Sparrow;L.F. Azevedo
  20. J. Heat Transfer v.106 Thermally Optimum Spacing of Vertical Natural Convection Cooled, Parallel Plates A. Bar-Cohen;W.M. Rohsenow
  21. J. Heat Transfer v.107 Experimental, Variable Properties Natural Convection From Large, Vertical, Flat Surface D.L. Siebers;R.F. Moffatt;R.G. Schwind