The Property investigation of the numerical code TIGER for the uncertain analysis

Ebina, Takanori*; Oi, Takao 

In order to obtain the information concerning the safety of the geological disposal, the sensitivity analysis considers the uncertainty of parameters resulting from the insufficiency of knowledge and information plays an important role. TIGER allows the physical and chemical properties within the system to vary with time and this function is useful for understanding the effect of the property change in sensitivity analysis. Therefore, at this study, some typical processing methods with the engineered barrier system and the host rock were developed, and through the comparison with the calculation time, the step of processing, the most suitable method was considered. After this, the interrelation between the calculation accuracy and the calculation time was examined for the purpose of using this method to the uncertain analysis. Through this consideration, the information of the best processing method, the calculation accuracy, and the analysis tool was arranged for an uncertain analysis used TIGER.