Assessment of RELAPS/MOD3 with Condensation Experiment for Pure Steam Condensation in a Vercal Tube

  • Kim, Sang-Jae (Korea Advanced Institute of Science and Technology) ;
  • No, Hee-Cheon (Korea Advanced Institute of Science and Technology)
  • Published : 1998.05.01

Abstract

The film condensation models in RELAP5/MOD3.1 and RELAP5/WOD3.2 are assessed with the data experiment performed in the scaled down condensation experimental facility with a single vertical tube inner diameter 46 mm in the range of pressure 0.1∼7.5 Mpa for the PSCS(Passive Secondary Condenser System) Both MOD3.1 and MOD3.2 don't shows any reliable predictions the experimental data The RELAP5/MOD3.1 overpredicts the heat transfer coefficients experiment, whereas the RELAP5/MOD3.2 underpredicts those data it is recommended that the film condonation model in RELAP5/MOD3.2 should be modified to hue a larger heat transfer coefficient than those the present model to give the reliable predictions.

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