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KMID : 0371819970290040320
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Nuclear Engineering and Technology
1997 Volume.29 No. 4 p.320 ~ p.326
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A Nuclide Decay Chain Transport Model by the Method of Characteristics
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Lee, Youn-Myoung
Kang, Chul-Hyung/Hahn, Pil-Soo/Chun, Kwan Sik
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Abstract
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The nuclide transport in the one-dimensional porous medium is considered as a fast step in deweloping a decay chain transport in multidimensional inhomogeneous media. A method of solving conventional advection-dispersion equation with decay chain of arbitrary length by using the method of characteristics (MOC) is introduced. In specific cases where the advection are dominant rat. ,O* her than dispersion, the method is known to be useful : one of the most distinctive advantages in , _, applying the model is that the MOC minimizes the numerical dispersion, -which is distinguished in, a0v such common numerical schemes as finite element method and finite difference method. The sug Bested model is considered to be effective through several illustrations for the case that decay chain :. of arbitrary length is involved during transport, which is difficult to solve by standard numerical solutions if the medium becomes more complicated.
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KEYWORD
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