Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Development of an Accurate Numerical Model for Density-Dependent Groundwater Flow and Solute Transport

밀도가 변하는 지하수흐름과 용질의 수송을 위한 정확한 수치모델의 개발

  • Park, Nam-Sik (Dept.of Civil Engineering, Engineering College, Donga University)
  • 박남식 (동아대학교 공과대학 토목공학과)
  • Published : 1997.12.01
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Abstract

A new numerical model was doveloped to simulate density-dependent ground water flow and solute transport. Accuracy of a numerical model depends upon how well it simulates advection dominant situations because numerical oscillations can spoil solutions for these situations. Nonlinear oscillation-absorption finite element method. based on the variational principle, was employed. Unlike previous numerical models, this model can easily be expanded for more complex situations. Accuracy of the model is evaluated by comparing with analytical solutions and results of other numerical model.

밀도가 변하는 지하수의 흐름과 용질의 수송 현상을 정확히 모델링할 수 있는 수치모델을 개발하였다. 수치모델의 정확도는 이송이 지배적인 경우에 발생하는 수치진동을 피할 수 있어야 얻을 수 있다. 이를 위하여 변분법에 기초한 비선형 수치진동흡수 유한요소법을 적용하였다. 개발된 수치모델은 기존 수치모델들과 달리 확장성이 뛰어나다. 본 수치모델의 정확도를 해석해와 다른 수치모델 결과와 비교하여 평가하였다.

Keywords

References

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