Abstract
Two dimensional problems present an additional spatial dimension to one-dimensional problems, and their Green element calculations essentially follow the procedure which we had adopted for 1-D. problems in the earlier chapters. For every differential equation, there has to be found an appropriate complimentary or auxiliary differential equation to which the fundamental solution is obtained. Green’s second identity in two dimensions provides the tool to transform the governing differential equation into an integral one which is discretized by appropriate 2-D. elements such as triangles and rectangles. The resulting discretized integral equation constitutes the element equations which are assembled to form the global matrix equation that is solved to obtain the nodal unknowns. In situations where the differential equation is nonlinear, the global matrix equation has to be linearized and solved by either the Picard or Newton-Raphson algorithm. In the remaining chapters of this text, we shall apply the GEM to steady, transient, linear and nonlinear problems in 2-D. domains which are either homogeneous or heterogeneous.
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References
Greenberg, M.D., Applications of Green’s functions in Science and Engineering, Prentice-Hall, Inc. Englewood Cliffs, NJ., 1971.
Taigbenu, A.E., “The Green Element Method,” Int. J. for Numerical Methods in Engineering, 38, pp 2241–2263, 1995.
Reddy, J.N., An Introduction to the Finite Element Method, McGraw-Hill, Inc., New York, 1984.
Liggett, J.A. and L-F. Liu, The Boundary Integral Equation Method for Porous Media Flow, Allen and Unwin, London, UK., 1983.
Liggett, J.A., “Singular Cubature over Triangles”, Int. J. Num. Meth. Eng., 18, pp. 1375–1384, 1982.
Cowper, G.R., “Gaussian Quadrature Formular for Triangles”, 7 (3), pp. 405–408, 1973.
Reddy, C.T. and D.J. Shippy, “Alternate Integration Formulae for Triangular Finite Elements”, Int. J. Num. Meth. Eng., 17, pp. 133–139, 1981.
Huyakorn, P.S., S.D. Thomas, and B.M. Thompson, “Technique for Making Finite Elements Competitive in Modeling Flow in Variably Saturated Porous Media”, Water Resources Res., 20, pp. 1099–1115, 1984.
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© 1999 Springer Science+Business Media New York
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Taigbenu, A.E. (1999). Steady Two-Dimensional Problems. In: The Green Element Method. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-6738-4_10
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DOI: https://doi.org/10.1007/978-1-4757-6738-4_10
Publisher Name: Springer, Boston, MA
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