Planar fluorescence for round bubble imaging and its application for the study of an axisymmetric two-phase jet

Integral characteristics of water droplet evaporation in high-temperature combustion products of typical flammable liquids using SP and IPI methods

“…Such panoramic optical techniques as SP [29,30] and IPI [31e34] contributed to measuring the sizes (radii) of atomized water droplets (R d ¼ 0.05e0.35 mm). In the case of the SP method [29,30], the cross-correlation complex was additionally equipped with diffuse screen 24. This screen was connected to laser 18 by the optical fiber and applied to provide backlight for moving water droplets (Fig.…”

Experimental study of multiphase flow in a model gearbox

“…This method of bubble visualization is commonly called as planar fluorescence for bubble imaging (PFBI) and the main advantage of PFBI that it can be applied in flows with large void fractions of bubbles, up to 5-6% [13].…”

“…Ideally for each phase the velocity and the void fraction have to be determined. Among the methods which are commonly used for the discrimination of the bubble phase, see [13][14][15][16][17][18][19], none is offering a good enough reliability of the bubble recognition in the case of significantly irregular bubble shapes and high degree of mutual bubble overlap. This means that in our case the bubble discrimination appeared to be a non-trivial task.…”

Evaporation, boiling and explosive breakup of heterogeneous droplet in a high-temperature gas

“…It allowed determining the droplet 3D sizes at any time and to control the time of complete evaporation or breakup of droplets. In [10][11][12] the heterogeneous droplets moved through high-temperature gases, and panoramic optical methods (PIV [16][17][18], PTV [19,20], Stereo PIV [21,22], IPI [23,24], SP [25][26][27]) were used. It was evident for us to choose to use our efficient high-speed video recording and software ''TEMA Automotive" [28,29] with fixed droplet configuration.…”