著者

秋元 梢 本間 俊司 古閑 二郎 松本 史朗

出版者

埼玉大学工学部

雑誌

埼玉大学紀要. 工学部 第1編 第1部 論文集 (ISSN:18804446)

巻号頁・発行日

vol.38, pp.35-39, 2005-03

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Unsteady mass transfer from a two-dimensional drop is solved numerically with boundary element method. The domain is decomposed into two sub-domains for cylindrical drop and surrounding fluid, and boundary elements are arranged between the sub-domains. The system equation for boundary elements is derived by a direct method and by a finite difference approximation for time derivative. The solutions are independent of the number of elements on the interface of the drop and the external boundary of the domain. The number of meshes inside the domain, on the other hand, affects the numerical solutions. It is necessary for good approximation to select appropriate resolution of the computational domain and the time step.

著者

本間 俊司 石井 淳一 古閑 二郎 松本 史朗 近沢 孝弘 菊池 俊明 半沢 正利 柴田 淳広 小山 智造

出版者

埼玉大学地域共同研究センター

雑誌

埼玉大学地域共同研究センター紀要 (ISSN:13474758)

巻号頁・発行日

no.4, pp.69-73, 2003

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A simulation system for uranium crystallization process is developed for designing the reprocessing by plutonium-uranium co-erystallization. Experiments of batch crystallization are conducted in order to validate the system. Calculated recoveries of uranium are in good agreement with experimental ones, and the error is within 5% when the recovery of uranium is greater than 70%.