An experimental analysis is here proposed on water-mist sprays operating at high supply pressure. Advanced laser-based diagnostics has been employed to perform measurements. In particular, a Malvern Spraytec device has been used to measure drop-size distribution at various distances from the injector outlet along the spray axis. Moreover, initial velocity has been determined through a PIV analysis. Some evaluations of the spray-cone angle have been proposed as an additional outcome of the analysis. Different nozzles have been employed to produce the water-mist spray and operative pressure has been set at values of interest for fire-protection applications, which constitute the reference field for the present work.

Drop-Size and Initial-Velocity Measurements in Water-Mist Sprays

VALDISERRI, PAOLO
2009

Abstract

An experimental analysis is here proposed on water-mist sprays operating at high supply pressure. Advanced laser-based diagnostics has been employed to perform measurements. In particular, a Malvern Spraytec device has been used to measure drop-size distribution at various distances from the injector outlet along the spray axis. Moreover, initial velocity has been determined through a PIV analysis. Some evaluations of the spray-cone angle have been proposed as an additional outcome of the analysis. Different nozzles have been employed to produce the water-mist spray and operative pressure has been set at values of interest for fire-protection applications, which constitute the reference field for the present work.
Atti 27° Congresso UIT sulla Trasmissione del Calore
131
136
P.E. Santangelo; P. Tartarini; P. Valdiserri
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/87826
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