DEVELOPMENT OF A WALL-TO-FLUID HEAT TRANSFER PACKAGE FOR THE SPACE CODE

The SPACE code that is based on a multi-dimensional two-fluid, three-field model is under development for licensing purposes of pressurized water reactors in Korea. Among the participating research and industrial organizations, KAERI is in charge of developing the physical models and correlation packages for the constitutive equations. This paper introduces a developed wall-tofluid heat transfer package for the SPACE code. The wall-to-fluid heat transfer package consists of twelve heat transfer subregions. For each sub-region, the models in the existing safety analysis codes and the leading models in literature have been peer reviewed in order to determine the best models which can easily be applicable to the SPACE code. Hence a wall-to-fluid heat transfer region selection map has been developed according to the non-condensable gas quality, void fraction, degree of subcooling, and wall temperature. Furthermore, a partitioning methodology which can take into account the split heat flux to the continuous liquid, entrained droplet, and vapor fields is proposed to comply fully with the three-field formulation of the SPACE code. The developed wall-to-fluid heat transfer package has been pre-tested by varying the independent parameters within the application range of the selected correlations. The smoothness between two adjacent heat transfer regimes has also been investigated. More detailed verification work on the developed wall-to-fluid heat transfer package will be carried out when the coupling of a hydraulic solver with the constitutive equations is brought to completion.

[1]  R. E. Henry A correlation for the minimum film boiling temperature , 1974 .

[2]  Qiusheng Liu,et al.  TRANSIENT CHF PHENOMENA DUE TO EXPONENTIALLY INCREASING HEAT INPUTS , 2009 .

[3]  V. Gnielinski New equations for heat and mass transfer in turbulent pipe and channel flow , 1976 .

[4]  A. Colburn,et al.  Design of Cooler Condensers for Mixtures of Vapors with Noncondensing Gases , 1934 .

[5]  A. Vasic,et al.  Lookup Tables for Predicting CHF and Film-Boiling Heat Transfer: Past, Present, and Future , 2005 .

[6]  A. Durmayaz,et al.  The 2006 CHF look-up table , 2007 .

[7]  S. Nukiyama The maximum and minimum values of the heat Q transmitted from metal to boiling water under atmospheric pressure , 1966 .

[8]  C. Y. Warner,et al.  AN EXPERIMENTAL INVESTIGATION OF TURBULENT NATURAL CONVECTION IN AIR AT LOW PRESSURE ALONG A VERTICAL HEATED FLAT PLATE , 1968 .

[9]  S. Garribba,et al.  STUDIES ON BURNOUT. PART 3. A NEW CORRELATION FOR ROUND DUCTS AND UNIFORM HEATING AND ITS COMPARISON WITH WORLD DATA. , 1967 .

[10]  Roberta Concilio Hansson TRIGGERING AND ENERGETICS OF A SINGLE DROP VAPOR EXPLOSION: THE ROLE OF ENTRAPPED NON- CONDENSABLE GASES , 2009 .

[11]  D. Groeneveld,et al.  THE MINIMUM FILM BOILING TEMPERATURE FOR WATER DURING FILM BOILING COLLAPSE , 1982 .

[12]  D. Groeneveld,et al.  A look-up table for fully developed film-boiling heat transfer , 2003 .

[13]  D. C. Groeneveld,et al.  Two-fluid modelling of inverted annular film boiling , 1997 .

[14]  R. K. Sundaram,et al.  A phenomenological correlation for post-CHF heat transfer , 1977 .

[15]  D. Groeneveld,et al.  1986 AECL-UO Critical Heat Flux Lookup Table , 1986 .

[16]  J. Carbajo A study on the rewetting temperature , 1985 .

[17]  M. Tribus,et al.  Heat Transfer to Laminar Flow in a Round Tube on Flat Conduit. The Graetz Problem Extended , 1951 .

[18]  Stephen M. Bajorek,et al.  Direct-Contact Heat Transfer Model for Dispersed-Flow Film Boiling , 2000 .

[19]  M. Shah A general correlation for heat transfer during film condensation inside pipes , 1979 .

[20]  W. Hering,et al.  Development and validation of a transition boiling model for RELAP5/MOD3 reflood simulation , 1998 .

[21]  N. Zuber,et al.  POINT OF NET VAPOR GENERATION AND VAPOR VOID FRACTION IN SUBCOOLED BOILING , 1974 .

[22]  Hee Cheon No,et al.  Non-Iterative Condensation Model for Steam Condensation with Noncondensable Gas in a Vertical Tubes , 2002 .