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Figure 1
Droplet and geyser geometries – light gray is the liquid, dark gray is the solid. White background is the air. Sharp orifice rims are shown here; see below for the bluntness types examined in the present research.
Figure 2
Droplet (left) and geyser (right) images from flight test of 0.48 cm diameter orifices (the two images are presented at the same scale). The small droplets in the foreground of the right image are residues of a test during a previous parabola and are in the fields of view but are not interacting with the hole or the jet.
Figure 3
Injection hole edge conditions. In this geometry, the liquid flow, when present, was upwards from the hole.
Figure 4
Photograph of experiment bolted to the floor on board the 727 of the Zero-G Corporation. The transparent box in the left half of the frame is the second level of containment around the test sections.
Figure 5
Experiment components, initial condition. One fluid system is shown in this view; there are two additional systems, identical except for the orifice size or rim shape, behind this system.