Elliptic Problems — Forming the Algebraic Equations

  • Granville Sewell


The form of the steady state PDE system solved by PDE/PROTRAN (Section 1.5), is:
$$\begin{array}{*{20}{c}} {0 = {A_x}(x,y,u,{u_x},{u_y}) + {B_y}(x,y,u,{u_x},{u_y}) + F(x,y,u,{u_x},{u_y})\,in\,R} \\ {u = FB(x,y)\,on\,\partial {R_1}} \\ {A{n_x} + B{n_y} = GB(x,y,u)\,on\,\partial {R_2}} \end{array}\,$$
where R is a general two dimensional region and \(\partial {R_1}\,and\,\partial {R_2}\) are disjoint parts of the boundary. The time dependent and eigenvalue problems will be studied in Chapters 4–6.


Piecewise Polynomial Numerical Integration Scheme Curve Triangle Galerkin Solution Piecewise Polynomial Approximation 
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  1. 1.
    Strang, G., Fix, G., An Analysis of the Finite Element Method, Englewood Cliffs, N.J., Prentice-Hall, 1973.MATHGoogle Scholar
  2. 2.
    Burchard, H.G., “Splines (with Optimal Knots) are Better,” J. App. Anal. 3 (1974), pp 309–319.MathSciNetMATHCrossRefGoogle Scholar
  3. 3.
    Pereyra, V., Sewell, G., “Mesh Selection for Discrete Solution of Boundary Problems in Ordinary Differential Equations,” Numer. Math. 23, (1975) pp 26l–268.MathSciNetGoogle Scholar
  4. 4.
    Sewell, G., “Automatic Generation of Tri angulations for Piecewise Polynomial Approximation,” Ph.D. Thesis, Purdue University (1972).Google Scholar

Copyright information

© Springer-Verlag New York Inc. 1985

Authors and Affiliations

  • Granville Sewell
    • 1
  1. 1.Mathematics DepartmentUniversity of Texas at El PasoEl PasoUSA

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