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Atomization and Sprays
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ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v5.i1.50
pages 89-105

MECHANISM OF ATOMIZATION OF A LIQUID JET

Xianguo Li
University of Waterloo

ABSTRAKT

A linear stability analysis is presented for a viscous liquid jet in an inviscid gas medium, with three-dimensional disturbances. Although Squire's theorem is applicable for an inviscid jet, it is not valid for the present case of a cylindrical viscous liquid jet. It is found that three-dimensional waves are relatively unimportant at low Weber numbers, but their growth rate becomes almost identical to that of varicose waves at large Weber numbers. Thus three-dimensional waves become observable at large Weber numbers. In particular, sinuous waves can become the most unstable waves under certain flow conditions within the wind-induced breakup regime. As the Weber number is increased, more and more three-dimensional disturbances become unstable and significant, and hence the jet breakup process becomes more and more complicated. These results agree well with experimental observations. Further, the results suggest the existence of the vanishingly small liquid jet breakup length, thus explaining why in the atomization regime the liquid jet disintegrates almost immediately at the nozzle exit.


Articles with similar content:

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ABSOLUTE AND CONVECTIVE INSTABILITY OF CYLINDRICAL LIQUID JETS IN CO-FLOWING GAS STREAMS
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INFLUENCE OF GAS VELOCITY ON BREAKUP OF PLANAR LIQUID SHEETS SANDWICHED BETWEEN TWO GAS STREAMS
Atomization and Sprays, Vol.20, 2010, issue 11
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INFLUENCES OF BOUNDED AND COMPRESSIBLE GAS MEDIUM ON THE INSTABILITY OF AN ANNULAR POWER-LAW LIQUID JET
Atomization and Sprays, Vol.28, 2018, issue 5
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