| Journal: | Journal of the Brazilian Society of Mechanical Sciences |
| Database: | PERIÓDICA |
| System number: | 000312024 |
| ISSN: | 0100-7386 |
| Authors: | Falcao-Filho, Joao Batista Pessoa1 Ortega, Marcos Aurelio2 Goes, Luiz Carlos Sandoval3 |
| Institutions: | 1Instituto Tecnologico de Aeronautica, Divisao de Sistemas Aeronauticos, Sao Jose dos Campos, Sao Paulo. Brasil 2Instituto Tecnologico de Aeronautica, Departamento de Engenharia Aeronautica, Sao Jose dos Campos, Sao Paulo. Brasil 3Instituto Tecnologico de Aeronautica, Departamento de Engenharia Mecanica, Sao Jose dos Campos, Sao Paulo. Brasil |
| Year: | 2000 |
| Volumen: | 22 |
| Number: | 2 |
| Pages: | 317-339 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | This work describes a lumped parameter mathematical model for the prediction of transients in an aerodynamic circuit of a transonic wind tunnel. Control actions to properly handle those perturbations are also assessed. The tunnel circuit technology is up to date and incorporates a novel feature: high-enthalpy air injection to extend the tunnel’s Reynolds number capability. The model solves the equations of continuity, energy and momentum and defines density, internal energy and mass flow as the basic parameters in the aerodynamic study as well as Mach number, stagnation pressure and stagnation temperature, all referred to test section conditions, as the main control variables. The tunnel circuit response to control actions and the stability of the flow are numerically investigated. Initially, for validation purposes, the code was applied to the AWT ("Altitude Wind Tunnel" of NASA-Lewis). In the sequel, the Brazilian transonic wind tunnel was investigated, with all the main control systems modeled, including injection |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de control, Ingeniería de transportes, Aerodinámica, Túnel de viento, Transónico, Parámetros concentrados, Sistemas de control, Inyección |
| Keyword: | Engineering, Control engineering, Transportation engineering, Aerodynamics, Wind tunnels, Transonic, Lumped parameters, Control systems, Injection |
| Full text: | Texto completo (Ver HTML) |
