An accurate quantification of the flow structure along the acoustic signal cycle in a forced two-phase jet

Calvo Bernad, E. (Universidad de Zaragoza) ; García Rodríguez, J.A. (Universidad de Zaragoza) ; Santolaya Sáenz, J.L. (Universidad de Zaragoza) ; Aísa Miguel, L.A. (Universidad de Zaragoza) ; García Palacín, J.I. (Universidad de Zaragoza)

Resumen: This paper provides an experimental study of an acoustically forced two-phase air jet generated by a convergent nozzle. The used particles are transparent glass spheres with diameters between 2 and 50 µm (which gives Stokes number of order 1) and the selected forcing frequency (f=400 Hz) induces a powerful nearly periodic flow pattern. Measurements were done by a two-colour Phase-Doppler Anemometer. The experimental setup is computer-controlled to provide an accurate control with a high long-term stability. Measurements cover the whole forcing signal cycle. Raw measurements were carefully post-processed to avoid bias induced by the forcing and the instrument setup, as well as obtain right mean values of the dispersed flow. The effect of the forcing and the particle load allows authors to establish the effect of the acoustic forcing and the particle load on the jet.

Idioma: Inglés

DOI: 10.1051/epjconf/20146702013

Año: 2014

Publicado en: EPJ web of conferences 67 (2014), 02013 [8 pp]
ISSN: 2101-6275

Tipo y forma: Article (Published version)

Área (Departamento): Mecánica de Fluidos (Departamento de Ciencia y Tecnología de Materiales y Fluidos)
Área (Departamento): Expresión Gráfica de la Ingeniería (Departamento de Ingeniería de Diseño y Fabricación)