| Revista: | Journal of the Brazilian Society of Mechanical Sciences |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312041 |
| ISSN: | 0100-7386 |
| Autores: | Andrade, Claudia R1 Zaparoli, Edson L |
| Instituciones: | 1Instituto Tecnologico de Aeronautica, Departamento de Energia, Sao Jose dos Campos, Sao Paulo. Brasil |
| Año: | 2000 |
| Volumen: | 22 |
| Número: | 4 |
| Paginación: | 571-581 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | This work studies the forced convection problem in internal flow between concentric annular ducts, with radial fins at the internal tube surface. The finned surface heat transfer is analyzed by two different approaches. In the first one, it is assumed one-dimensional heat conduction along the internal tube wall and fins, with the convection heat transfer coefficient being a known parameter, determined by an uncoupled solution. In the other way, named conjugated approach, the mathematical model (continuity, momentum, energy and K-epsilon equations) applied to tube annuli problem was numerically solved using finite element technique in a coupled formulation. At first time, a comparison was made between results obtained for the conjugated problem and experimental data, showing good agreement. Then, the temperature profiles under these two approaches were compared to each other to analyze the validity of the one-dimensional classical formulation that has been utilized in the heat exchanger design |
| Disciplinas: | Física y astronomía, Ingeniería |
| Palabras clave: | Termodinámica y física estadística, Ingeniería mecánica, Transferencia de calor, Intercambiadores de calor, Número de Nusselt, Aletas |
| Keyword: | Physics and astronomy, Engineering, Thermodynamics and statistical physics, Mechanical engineering, Heat transfer, Heat exchangers, Nusselt number, Fins |
| Texto completo: | Texto completo (Ver HTML) |
