Resolución Numérica de problemas de contorno no lineales con métodos de gradiente conjugado
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En este trabajo estudiaremos el artículo de Glowinski y Reinhart (“Continuationconjugate
gradient methods for the least squares solution of nonlinear boundary value
problems”) para construir un método de resolución de problemas de optimización
no lineales sin restricciones. Para ello realizaremos un discretizado del problema mediante
el método de elementos finitos (MEF), y resolveremos el sistema resultante
empleando el método de gradiente conjugado. Para este último se seleccionará por
su eficiencia y robustez la variante de Polak-Ribière. Tras un estudio teórico de estos
métodos se construirá un código en Matlab, a través del cual resolveremos diversos
ejemplos, algunos de ellos del propio artículo.
In this memory the article of Glowinski and Reinhart (“Continuation-conjugate gradient methods for the least squares solution of nonlinear boundary value problems”) will be studied to build a method to solve unconstrained non-linear optimization problems. First, finite elemets method (FEM) is employed to discretize the problem, then conjugate gradient method will be use to solve the system of equations. The solution of conjugate gradient is obtained by using Polak-Ribière variant, due to its eficciency and robustness. Finally, after a theoretical study, some examples will be solved with Matlab code.
In this memory the article of Glowinski and Reinhart (“Continuation-conjugate gradient methods for the least squares solution of nonlinear boundary value problems”) will be studied to build a method to solve unconstrained non-linear optimization problems. First, finite elemets method (FEM) is employed to discretize the problem, then conjugate gradient method will be use to solve the system of equations. The solution of conjugate gradient is obtained by using Polak-Ribière variant, due to its eficciency and robustness. Finally, after a theoretical study, some examples will be solved with Matlab code.
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Traballo Fin de Grao en Matemáticas. Curso 2020-2021
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