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Abstract:

In this paper we study numerical approximations for positive solutions of a nonlinear heat equation with a nonlinear boundary condition. We describe in terms of the nonlinearities when solutions of a semidiscretization in space exist globally in time and when they blow up in finite time. We also find the blow-up rates and the blow-up sets. In particular we prove that regional blow-up is not reproduced by the numerical scheme. However, in the appropriate variables we can reproduce the correct blow-up set when the mesh parameter goes to zero.

Registro:

Documento: Artículo
Título:Numerical blow-up for a nonlinear problem with a nonlinear boundary condition
Autor:Ferreira, R.; Groisman, P.; Rossi, J.D.
Filiación:Universidad Autónoma de Madrid, 28049 Madrid, Spain
Universidad de San Andrés, Vito Dumas 284 (1644), Victoria, Buenos Aires, Argentina
Departamento de Matemática, FCEyN, UBA 1428, Argentina
Palabras clave:Nonlinear boundary conditions; Numerical blow-up; Porous medium equation
Año:2002
Volumen:12
Número:4
Página de inicio:461
Página de fin:483
DOI: http://dx.doi.org/10.1142/S021820250200174X
Título revista:Mathematical Models and Methods in Applied Sciences
Título revista abreviado:Math. Models Methods Appl. Sci.
ISSN:02182025
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182025_v12_n4_p461_Ferreira

Referencias:

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Citas:

---------- APA ----------
Ferreira, R., Groisman, P. & Rossi, J.D. (2002) . Numerical blow-up for a nonlinear problem with a nonlinear boundary condition. Mathematical Models and Methods in Applied Sciences, 12(4), 461-483.
http://dx.doi.org/10.1142/S021820250200174X
---------- CHICAGO ----------
Ferreira, R., Groisman, P., Rossi, J.D. "Numerical blow-up for a nonlinear problem with a nonlinear boundary condition" . Mathematical Models and Methods in Applied Sciences 12, no. 4 (2002) : 461-483.
http://dx.doi.org/10.1142/S021820250200174X
---------- MLA ----------
Ferreira, R., Groisman, P., Rossi, J.D. "Numerical blow-up for a nonlinear problem with a nonlinear boundary condition" . Mathematical Models and Methods in Applied Sciences, vol. 12, no. 4, 2002, pp. 461-483.
http://dx.doi.org/10.1142/S021820250200174X
---------- VANCOUVER ----------
Ferreira, R., Groisman, P., Rossi, J.D. Numerical blow-up for a nonlinear problem with a nonlinear boundary condition. Math. Models Methods Appl. Sci. 2002;12(4):461-483.
http://dx.doi.org/10.1142/S021820250200174X