VALIDATION OF THE DRYOUT MODELING CODE, FIDOM

摘要

A Methodology, FIDOM (FIlm DryOut Modeling) has been developed in BARC to predict CHF due to dryout of liquid film in annular two phase flow. The FIDOM has been validated earlier in BARC using in-house experimental data on CHF (125 data points) under BWR conditions and some of the models of the deposition and entrainment were found to result into very good prediction. Subsequently, the code has been further validated against various CHF databases (2170 data points) available in the literature. The prediction of FIDOM was found to be excellent when compared to these experimental data. The models for the entrainment and deposition have been validated for the prediction of the dryout and these models have potential for the application to the nuclear fuel assembly for the evaluation of critical power.