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趙炳辰,河池利彦,倫忠燮 경상대학교 환경보전연구소 1994 環境保全硏究所報 Vol.2 No.1
A method for predicting the salt water exclusion process or the time-varying salinity in an estuarine reservoir system is presented, which may be a powerful tool when the reservoir flow is well mixed and predominently one-dimentional. The method that views the reservoir as a one-dimentionally distributed system is a great improvement over the one based upon the salt balance equation for a lumped system. Coupling the open channel flow equations with the convection-dispersion equation, the flow of water and the transport of water density are simultaneously analyzed in terms of the interaction between water movement and density. The quasilinealized basic equations to be solved are cast into numerical versions by use of the finite element method and the implicit time integration scheme to build a versatile and tough model for salinity and flow prediction. Inclusion of time-dependent local injection of withdrawal of water and salt in the model is done by boundary and lateral flow treatments. The method presented in this paper is applied to the new Man-Keum estuarine reservoir in Korea, now under construction. The result of 5 year consecutive analysis after the construction of the polder dikes shows that the predicted salinity is allowable for irrigation at the sites of pumping stations located far downstream of the two main rivers, Man-Kyeong and Dong-Jin.
A. Ya. Faenov,Y. Fukuda,T. A. Pikuz,M. Kando,H. Kotaki,T. Homma,K. Kawase,T. Kameshima,I. Daito,Y. Hayashi,H. Sakaki,P. Bolton,A. Pirozhkov,A. Yogo,M. Tampo,T. Nakamura,M. Mori,K. Ogura,T. Kawachi,H. 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.1
The interaction of short intense laser pulses with clusters enhanced the absorption of the incident laser light compared to solid targets. Due to the increased absorption, these targets are heated significantly, leading to enhanced emission of X-rays and generation of multiply charged ions with kinetic energies from tens of keV to tens of MeV. Possible applications of these targets include an X-ray source for microscopy or lithography and an ion source for table-top accelerators. The recent results obtained in Kansai Photon Science Institute for the short, moderate intensity, ~5 × 1017W/cm2, laser pulses interactions with large clusters, are presented. Applications of a femtosecondlaser-plasma cluster-based source for different types of nanostructure imaging are discussed.