Development of Ocean-Condition Code Based on RELAP5

Mathematical models of ocean conditions have been studied.By modifying the control equa-tions,an ocean condition available system analysis code named RELAP5/MC is developed from RELAP5,which is an advanced and independent node programming code.Calculation of the natural circulation charac-teristics of a simple two loop system under ocean conditions has been carried out with RELAP5/MC.The analysis shows that all the results can be reasonably explained and the code development is successful at this stage.