2019-09-042019-09-042012NUNES, Carlos Matheus Barriga. Cálculo numérico de derivas para modelagem 2D de métodos eletromagnéticos. Orientador: Cícero Roberto Teixeira Régis. 2012. 50 f. Trabalho de Curso (Bacharelado em Geofísica) - Faculdade de Geofísica, Instituto de Geociências, Universidade Federal do Pará, Belém, 2012. Disponível em: http://bdm.ufpa.br/jspui/handle/prefix/1991. Acesso em:.http://bdm.ufpa.br/jspui/handle/prefix/1991modeling of electromagnetic methods. calculate derivatives is generally a task indispensable. In this paper, we solve numerically the Poisson equation with conditions homogeneous Dirichlet using the nite element method. The discretization of the domain for implementation of the method is achieved using a free software unstructured mesh generation, Triangle. Therefore, we describe how to generate a mesh using Triangle. To calculate the numerical derivatives are used two methods. basing it on the rst derive the basis functions, the derivative at a node is equal to the average of the gradients basis functions in the neighborhood of this node. Second, it is a sliding t by least weighted square, where the weight is defn a Gaussian function. the results the numerical derivative are obtained from successive re nements of the mesh elements and compared with the nite derived from the analytical solution. First is used to analytical solution to evaluate the error Acquired by the calculation of the derivatives and then the numerical solution. Then, we evaluate the e ciency of the methods.Acesso AbertoMétodo dos Elementos FinitosTriangleMalha não estruturadarecuperação de derivadasCNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEOFISICATrabalho de Curso - Graduação - Monografia