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Jinno, Kenji*; Nakagawa, Kei*; *; ; Ijiri, Yuji*; Watari, Shingo; Webb, E. K.*; Kanazawa, Yasuo*; Uchida, Masahiro

PNC TY1606 97-001, 44 Pages, 1997/03

PNC-TY1606-97-001.pdf:2.76MB

no abstracts in English

Development of the evaluation method for the aerosol particle deposition amounts in the containment vessel and the reactor building, 8; Development of prediction model for deposition rate of aerosol particle in a narrow channel in a reactor building

Horiguchi, Naoki; Uesawa, Shinichiro; Yoshida, Hiroyuki

no journal, , 

Evaluation method based on CFD and particle tracking method for aerosol particle depositon in a reactor building during severe accident has been developed. In order to construct of prediction model of particle deposition in a narrow channel for reduction of numerical simulation cost in the evaluation method, some numerical simulations with each representative components of the narrow channel, a straight, a bend, a nozzle and a diffuser part were conducted. In case of the bend part, behavior of air and CsI particles under steady flow were simulated with parameters, particle diameter, pressure difference between inlet and outlet of a modeled channel and width of the channel. As results of particle deposition rate based on the numerical simulation, increase tendences of particle depositon rate with increase of particle diameter were changed with increase of pressure difference and decrease of width. These results can be important knowledge for the modelling.