Análise do escoamento em duto curto de orifício (short tube orifices) e estudo dos mecanismos de queda de pressão via gitt para uso em sistemas de refrigeração

• Ano de defesa: 2011
• Autor(a) principal: Silva, Felipe Vilar da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraí­ba; BR; Engenharia Mecânica; Programa de Pós-Graduação em Engenharia Mecânica; UFPB
• Palavras-chave em Português: Refrigeração; Duto curto de Orifício; Refrigeration; Short Tube Orifices; ENGENHARIAS::ENGENHARIA MECANICA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/5314

This work points to a detailed study of the mechanisms involved in the expansion and flow in short tube orifices. The flow unlike the vast majority of available works in the literature is at the first step addressed through a viscous formulation using boundary layer equations. The equations in this proposal are presented in a way that make it difficult or impossible to approach a solution via the traditional mathematical techniques, such as separation of variables, Green's functions among others. To resolve the issue will be used in formulating the proposed Generalized Integral Transform technique, in addition to the equations of continuity and the momentum, be able to solve the energy equation in the enthalpy formulation. The enthalpy formulation is used to capture the effect of expansion in the short tube orifices. The results will be presented as adimensionalized for hydrodynamic and thermal fields and parameters of practical interest in engineering.