| Revista: | Latin American applied research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000372269 |
| ISSN: | 0327-0793 |
| Autores: | Salinas, C.H1 Gatica, Y.A Vargas, H.A Ananias, R.A2 |
| Instituciones: | 1Universidad del Bío-Bío, Departamento de Ingeniería Mecánica, Concepción. Chile 2Universidad del Bío-Bío, Departamento de Ingeniería en Maderas, Concepción. Chile |
| Año: | 2013 |
| Periodo: | Ene |
| Volumen: | 43 |
| Número: | 1 |
| Paginación: | 95-102 |
| País: | Argentina |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The objective of the present work was to simulate three-dimensional drying of wood, based on the concept of the effective diffusion coefficient. For this, we used a conventional drying process of radiata pine in a controlled environment (dry and wet bulb temperatures of 44 and 36 ºC, respectively). This experiment allowed us to gather data on: a) the spatial distribution of moisture content at different drying times, b) the drying curve, and c) the surface emission coefficient. A differential, partial, nonlinear, second-order mathematical model was used, and the exponential functions of the effective diffusion coefficient characterized the three-dimensional orthotropic (radial, tangential, and longitudinal) transport of moisture content in the wood. This mathematical model was integrated numerically through the control volume finite element method, which contemplates: a) tetrahedral elements for discretization, b) implicit Euler method for the time differential, and c) Gauss-Seidel with successive overrelaxation method to resolve the linear equation system. We compared these results for the threedimensional spatial distributions of moisture content after 22, 44, 66, and 88 (h) of drying, and the resulting drying curves were in good agreement with the experiments |
| Disciplinas: | Agrociencias, Ingeniería |
| Palabras clave: | Silvicultura, Ingeniería mecánica, Secado de madera, Pino, Difusión de calor, Modelos matemáticos |
| Keyword: | Agricultural sciences, Engineering, Silviculture, Mechanical engineering, Wood drying, Pine, Heat diffusion, Mathematical models |
| Solicitud del documento | |
