Influência da dissipação viscosa na transferência de calor em tubos concêntricos no escoamento turbulento

• Ano de defesa: 1977
• Autor(a) principal: Silva, Luiz Armando Gonzalez da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Rio de Janeiro; Brasil; Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia; Programa de Pós-Graduação em Engenharia Mecânica; UFRJ
• Palavras-chave em Português: Escoamento bifásico; Dinâmica dos fluídos; Tubos; CNPQ::ENGENHARIAS::ENGENHARIA MECANICA::FENOMENOS DE TRANSPORTE::TRANSFERENCIA DE CALOR
• Link de acesso: http://hdl.handle.net/11422/3588

The temperature profile for a turbulent flow, of a newtonian fluid flowing between two concentric tubes has been determined. The velocity profile was based on the Deissler and Quarmby equations for turbulent flows. The momentum difusivity equation for the turbulent flow has been evaluated according o Deissler and Quarmby and the heat difusivity equations and represented according to Aser and Chao. These equations with the corresponding boundary conditions has beem solved employing the numerical method of Crank-Nicholson. The influence of the dissipation on the temperature profile is pronounced in the turbulent flow in the neighborhood of the inner and outer wall of the tube and increases in the axial direction.