Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Physics of Fluids
9 (1997), S. 3707-3717
ISSN:
1089-7666
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
The linear stability of a plane liquid sheet of metal flowing between parallel gas streams having different velocities is considered. The presence of a magnetic field only slightly modifies the neutral stability curves obtained in the hydrodynamic regime where Kelvin–Helmholtz instabilities are the dominant mechanism in the destabilization of the sheet. The most unstable wavelength is found to scale with We−1 where We is the Weber number. As expected, the growth rate of the instabilities is decreased when a transverse magnetic field is applied. However, the growth rate is increased when the applied magnetic field is parallel to the direction of the velocities. A possible explanation of this unusual phenomenon is presented. In an experimental air-blast atomizer with water and nitrogen, particle size and velocity measurements have been made with a laser-doppler analyzer. The results agree with the theoretical predictions for zero magnetic flux density and are also consistent with predictions based on a more global breakup mechanism. © 1997 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.869508
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