EXPERIMENTAL STUDY OF SPRAY CHARACTERISTICS AND ITS UNIFORMITY UNDER DIFFERENT ICING CONDITIONS
An experimental study was conducted to investigate the spray characteristics in a horizontal low-speed icing research wind tunnel where two-phase air/dispersed water flows were produced to simulate atmospheric icing processes. The variations of the liquid water content (LWC), droplet size distribution (DSD), and droplet velocity were studied in the vertical and streamwise directions in the CIGELE tunnel test section for different free-stream velocities and initial DSDs (DSD at nozzle outlet). An integrated system for icing studies was used to measure DSD and LWC, and Particle Image Velocimetry was used for droplet velocity measurements. Nozzle dynamic parameters were varied in the tests in order to produce clouds with different DSDs and LWCs to simulate different icing conditions. The results show that droplet size and LWC increase downwardly for low air velocities (below 10 m/s) due to gravity effects. On the other hand, the uniformity of DSD and LWC is improved considerably for higher velocities (above 20 m/s). The limit for obtaining a uniform cloud depends strongly on air velocity and droplet size, and consequently, on icing conditions.
Hamid Banitalebi Dehkordi Masoud Farzaneh Laszlo E.Kollar Pierre Van Dyke
NSERC/Hydro-Quebec/UQAC Industrial Chair on Atmospheric Icing of Power Network Equipment (CIGELE) an Hydro-Quebec Research Institute (IREQ),Varennes, QC, Canada
国际会议
The 14th International Workshop on Atmospheric Icing of Structures(第十四届结构物大气覆冰国际研讨会 IWAIS 2011)
重庆
英文
85
2011-05-08（万方平台首次上网日期，不代表论文的发表时间）