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  • Modified method of characteristics  (1)
  • constrained spaces  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Improved energy estimates for interior penalty, constrained and discontinuous Galerkin methods for elliptic problems. Part I (1999)
    Springer
    Computational geosciences 3 (1999), S. 337-360 
    Details
    ISSN: 1573-1499
    Keywords: discontinuous spaces ; elliptic equations ; error estimates ; constrained spaces
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Computer Science
    Notes: Abstract Three Galerkin methods using discontinuous approximation spaces are introduced to solve elliptic problems. The underlying bilinear form for all three methods is the same and is nonsymmetric. In one case, a penalty is added to the form and in another, a constraint on jumps on each face of the triangulation. All three methods are locally conservative and the third one is not restricted. Optimal a priori hp error estimates are derived for all three procedures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1011591328604
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Modeling of in-situ biorestoration of organic compounds in groundwater (1991)
    Springer
    Transport in porous media 6 (1991), S. 667-702 
    Details
    ISSN: 1573-1634
    Keywords: Modified method of characteristics ; time-splitting ; in situ biorestoration ; adsorption ; contaminant transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract A convergent numerical method for modeling in situ biorestoration of contaminated groundwater is outlined. This method treats systems of transport-biodegradation equations by operator splitting in time. Transport is approximated by a finite element modified method of characteristics. The biodegradation terms are split from the transport terms and treated as a system of ordinary differential equations. Numerical results for vertical cross-sectional flow are presented. The effects of variable hydraulic conductivity and variable linear adsorption are studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00137855
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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