| Journal: | Journal of the Brazilian Society of Mechanical Sciences and Engineering |
| Database: | PERIÓDICA |
| System number: | 000312299 |
| ISSN: | 1678-5878 |
| Authors: | Gomez, L.C1 Milioli, F.E |
| Institutions: | 1Universidade de Sao Paulo, Escola de Engenharia de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2005 |
| Season: | Abr-Jun |
| Volumen: | 27 |
| Number: | 2 |
| Pages: | 141-149 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | Turbulence parameters are derived from results of numerical simulation of gas-solid flow in circulating fluidized bed (CFB). A two fluid model with constant viscosity is applied considering an Eulerian continuum approach for both phases. An analysis is performed using a direct numerical integration of balance equations without an explicit use of any turbulence model for both phases. Even though velocity fluctuations of lower scales are eliminated by the considered computational mesh, fluctuations of larger scales are detected and analyzed. The results show that the Reynolds stresses behave according to the expected for a turbulent flow, and a reasonable agreement is found regarding literature experiment. Following the literature, granular temperature is derived from the Reynolds stresses, and qualitatively matches the expected behavior as described by the kinetic theory of granular flow. Finally, it is seen that solid's phase turbulence is captured using the present approach |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería hidráulica, Ingeniería mecánica, Hidrodinámica, Turbulencia, Fluidos, Lechos fluidizados, Flujo multifásico |
| Keyword: | Engineering, Hydraulic engineering, Mechanical engineering, Fluidized beds, Hydrodynamics, Multiphase flow, Flows, Turbulence |
| Full text: | Texto completo (Ver PDF) |
