Nonlinear Instability of an Evaporating Capillary Jet | Zendy

Mary Saroka | Zendy; Guo Yi | Zendy; Nasser Ashgriz | Zendy

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Nonlinear Instability of an Evaporating Capillary Jet

Author(s) -

Mary Saroka,

Guo Yi,

Nasser Ashgriz

Publication year - 2001

Publication title -

aiaa journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.828

H-Index - 158

eISSN - 1081-0102

pISSN - 0001-1452

DOI - 10.2514/2.1502

Subject(s) - breakup , instability , mechanics , reynolds number , evaporation , jet (fluid) , growth rate , weber number , wavenumber , materials science , nonlinear system , physics , thermodynamics , optics , mathematics , geometry , turbulence , quantum mechanics

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 modié ed growth rate for the instability of an evaporating jet is deé 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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