Topological optimization for solids under heat and mass transfer using boundary element

• Autor(a) principal: Anflor, Carla Tatiana Mota
• Data de Publicação: 2012
• Outros Autores: Goulart, Jhon Nero Vaz, Marczak, Rogerio Jose
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/108743
• topic: Elementos de contorno; Otimização topológica; Estruturas (Engenharia); Transferência de calor; Transferência de massa; Shape optimization; Potential problem; Boundary elements; topological derivative; Mass transfer; Optimización de forma; problemas potenciales; Elementos de contorno; Derivada topológica; Transferencia de masa

The objetive of this work is to present the implementation of topologicalshape sensitivity formulation in a BEM analysis for simultaneous heat and mass transfer optimization problems. The proposed approach uses a topological derivative in order to estimate the sensitivity to create a hole in the domain of the problem. Thus, it is evaluated at internal points, and the ones showine the lowest values are used to remove material by opening a circular cavity. As the iterative process evolves, the original domain has holes progressively punched out until a given stop criteria is achieved. Since the sensitivities for each of the differential equations are different, a penalization-type approach has been used to weight the sensitives associated to each problem, This allows the imposition of district penalization factor for each problem, according to especified priorities. The result obtained showed good agreement with solutions avaliable in the literature.