Abstract
The temporal instability of an evaporating liquid jet is investigated numerically. Effects of liquid Reynolds number, disturbance wave number, and the surface evaporation rate on the growth rate of the instability are studied. The results are compared with that of the linear analytical solution. For a high evaporation rate the propagation of the disturbance is no longer linear; thus, the linear analysis cannot predict the growth accurately. A modie ed growth rate for the instability of an evaporating jet is dee ned. The breakup mechanism of viscous liquid jets and the formation of satellite drops are described. The results show that the satellite size decreases with decreasing Reynolds number and increasing wave number and evaporation rate. For large evaporation rates the satellite dropsbecomevery small, oreven completely eliminated. The effect of theevaporation rate on the breakup time is also studied.
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