• Title/Summary/Keyword: 2차해석

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Numerical Analysis for Advection Equation Based on the Method of Moments (모멘트법에 의한 이송방정식의 수치해석)

  • Baek, Jung-Cheol;Jo, Won-Cheol;Heo, Jun-Haeng
    • Journal of Korea Water Resources Association
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    • v.32 no.2
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    • pp.99-110
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    • 1999

  • The method of moments, a Lagrangian scheme, considers the zeroth, first, and second moments of the grid cell spatial distributions of the concentration and then advects the concentration by maintaining conservation of the moments. The reasonable inital description of the first and second moments as well as the mean concentration, the zeroth moments, in grid element is important in the method of moments. In this study, the description methods of each initial moment are reviewed, and the method of moments is extended to overcome the restrictions of Courant number. Its performance is compared with those of available Eulerian and Lagrangian schemes. As the results, the method is successfully extended to overcome the stability restriction and is an accurate scheme for the advection simulation of concentration distribution, especially of which the gradient is steep. In addition, the method is very promising scheme in terms of computational efficiency when the mixing is confined in a relatively small region to the entire domain in two-dimensional problem.

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우리도 PATENTMAP를 만들자

  • 남개영
    • 발명특허
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    • v.13 no.4 s.146
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    • pp.50-53
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    • 1988

  • -Patent map는 수집된 정보를 종합$\cdot$정리$\cdot$해석함으로써 2차정보와 새로운 전략을 창출하게 된다.-

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우리도 PATENTMAP를 만들자(3)

  • 남계영
    • 발명특허
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    • v.13 no.6 s.148
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    • pp.39-43
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    • 1988

  • -Patent map는 수집된 정보를 종합$\cdot$정리$\cdot$해석함으로써 2차정보와 새로운 전략을 창출하게 된다.-

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우리도 PATENTMAP를 만들자 (완)

  • 남계영
    • 발명특허
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    • v.13 no.7 s.149
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    • pp.23-27
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    • 1988

  • -Patent Map는 수집된 정보를 종합$\cdot$정리$\cdot$해석함으로써 2차정보와 새로운 전략을 창출하게 된다.-

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