Development of a CFD-BASED simulation method for cesium penetration into concrete

Miyahara, Naoya*; Maejima, Hayato*; Suzuki, Eriko   ; Osaka, Masahiko  ; Sato, Isamu*

In the decommissioning of the Fukushima-Daiichi Nuclear Power Station, a large amount of radioactive concrete waste should be generated. For the waste management, its appropriate treatment based on the accurate information of the inventory and the contamination aspect of radioactive Cs is of importance. In particular, accurate estimation for Cs penetration into concrete by immersion to the contaminated water should be required. Thus, we have launched a development of CFD-based simulation method which is expected to help evaluate the Cs penetration behavior into concrete. In this presentation, a first trial simulation is given for the reproduction of experimental result for Cs penetration into homogeneous concrete for confirmation of the applicability of this method by considering the most basic physical parameter, Cs diffusion.