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Simulation of One-Dimensional Transcritical Flow with Discontinuous Galerkin Finite Element Method

불연속 갤러킨 유한요소법을 이용한 1차원 천이류 모의

  • 이해균 (단국대학교(천안) 토목환경공학과) ;
  • 이남주 (경성대학교 토목공학과)
  • Received : 2012.11.12
  • Accepted : 2013.02.19
  • Published : 2013.03.28

Abstract

With the increase of the frequency in large-scale floods and natural disasters, the demands for highly accurate numerical river models are also rapidly growing. Generally, flows in rivers are modeled with previously developed and well-established numerical models based on shallow water equations. However, the so-far-developed models reveal a lot of limitations in the analysis of discontinuous flow or flow which needs accurate modeling. In this study, the numerical shallow water model based on the discontinuous Galerkin method was applied to the simulation of one-dimensional transcritical flow, including dam break flows and a flow over a hump. The favorable agreement was observed between numerical solutions and analytical solutions.

Keywords

Shallow Water Equation;Discontinuous Galerkin;Finite Element Method;Rranscritical Flow

Acknowledgement

Supported by : 국토해양부

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