Ligament breakup mode

Figure 3.12. Schematic showing Liquid Jet-Ligament Breakup mode (left) and Liquid Film Sheet Breakup mode (right) in two-fluid atomization of melts.

Droplet Formation in Gas Atomization. Experimental and modeling studiesl160 161 169] 318] 319] 321]- 325] have shown that gas atomization of liquid metals in spray forming and powder metallurgy processes may take place in two primary modes, i.e., liquid jet-ligament breakup and liquid film-sheet breakup. 

Multimode breakup occurs at values of We between those of bag- and sheetthinning and resembles a combination of the two breakup modes. Bag formation accompanied by the presence of a core drop results in the formation of a long ligament in the center of the bag, which is referred to as a stamen or plume [1,16], The third image in the second row of Fig. 6.1 illustrates the bag/plume structure. 

All three fuels exhibited the same basic spray formation processes. No new or exotic modes of droplet formation were observed with the SRC-II, although distinct differ-ences in ligament length and breakup time were seen. 

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