| Journal: | Journal of the Brazilian Society of Mechanical Sciences |
| Database: | PERIÓDICA |
| System number: | 000312089 |
| ISSN: | 0100-7386 |
| Authors: | Colaco, Marcelo Jose1 Orlande, Helcio Rangel Barreto |
| Institutions: | 1Universidade Federal do Rio de Janeiro, Programa de Engenharia Mecanica, Rio de Janeiro. Brasil |
| Year: | 2001 |
| Volumen: | 23 |
| Number: | 2 |
| Pages: | 201-215 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | This paper deals with the use of the conjugate gradient method of function estimation for the simultaneous identification of two unknown boundary heat fluxes in parallel plate channels. The fluid flow is assumed to be laminar and hydrodynamically developed. Temperature measurements taken inside the channel are used in the inverse analysis. The accuracy of the present solution approach is examined by using simulated measurements containing random errors, for strict cases involving functional forms with discontinuities and sharp-corners for the unknown functions. Three different types of inverse problems are addressed in the paper, involving the estimation of: (i) Spatially dependent heat fluxes; (ii) Time-dependent heat fluxes; and (iii) Time and spatially dependent heat fluxes |
| Disciplines: | Física y astronomía, Ingeniería |
| Keyword: | Termodinámica y física estadística, Ingeniería química, Método del gradiente conjugado, Estimación, Convección forzada, Flujo laminar, Flujo de calor |
| Keyword: | Physics and astronomy, Engineering, Thermodynamics and statistical physics, Chemical engineering, Conjugate gradient method, Estimation, Forced convection, Laminar flow, Heat flow |
| Full text: | Texto completo (Ver HTML) |
