| Revue: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000312327 |
| ISSN: | 1678-5878 |
| Autores: | Fraidenraich, Ariel1 Jacovkis, Pablo M Lima, Fernando Roberto de A2 |
| Instituciones: | 1Universidad de Buenos Aires, Facultad de Ingeniería, Buenos Aires. Argentina 2Comissao Nacional de Energia Nuclear, Centro Regional de Ciencias Nucleares do Nordeste, Recife, Pernambuco. Brasil |
| Año: | 2006 |
| Periodo: | Jul-Sep |
| Volumen: | 28 |
| Número: | 3 |
| Paginación: | 286-292 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | We applied the perturbative theory to perform sensitivity analysis of the shallow water equations. The numerical solution of these equations was found via the mass lumping finite element technique. Then, the adjoint system of the shallow water equations was derived for the one-dimensional case and the expression of the sensitivity coefficient of a generic functional with respect to a generic parameter (Chézy resistance coefficient, solitary wave amplitude and bed channel slope) was obtained, using the differential formalism. The sensitivity of the mean functional, representing the first approximation of the velocity and the depth, was analyzed with regard to these parameters. Results of the sensitivity coefficients obtained via the perturbative methodology satisfactorily matched the values computed by the direct method, i.e., by means of the direct solution of the shallow water equations changing the values of input parameters for each case considered |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería hidráulica, Ingeniería mecánica, Aguas someras, Análisis de sensibilidad, Ecuaciones de aguas someras, Metodo perturbativo, Flujo, Canales |
| Keyword: | Engineering, Hydraulic engineering, Mechanical engineering, Shallow waters, Sensitivity analysis, Shallow water equations, Perturbative method, Mass lumping technique, Wave propagation, Channels, Flow |
| Texte intégral: | Texto completo (Ver PDF) |
