Adaptation of FEAP for Seepage with a Free Surface

  • A. Das Gupta
  • G. Mustafa
Conference paper

Summary

This paper deals with the modifications of the General Purpose Finite Element Program, FEAP by Taylor (1977) to convert the package into a continuous simulator for seepage problem with a free surface boundary. The FEAP was developed for direct solution of the problem with well defined boundaries for the solution domain. For seepages problems with a free surface, since the profile is unknown, computation procedure has to pass through several iterations till the specific conditions on free surface are satisfied. To extend the applicability of FEAP as a continuous simulator for problems with unknown boundary, modifications are introduced in input data module; algorithms for checking convergence of the solution, for adjustment of the free surface boundary according to the discrepancy between calculated head and specified head and for internal changing of boundary conditions in input data module due to the adjustment are incorporated. An application to a specific case of seepage from open channel is described to illustrate the capabilities.

Keywords

Free Surface Hydraulic Head Unknown Boundary Continuous Simulator Seepage Problem 
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References

  1. Bouwer, H. (1969) Theory of Seepage from Open Channels. In Advances in Hydroscience (V.T. Chow,ed.),5, 121–172.Google Scholar
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Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • A. Das Gupta
    • 1
  • G. Mustafa
    • 1
  1. 1.Asian Institute of TechnologyBangkokThailand

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