Effect of mass-velocity on liquid jet atomization in Mach 1 gasflow
Interacting two-phase flow in four differently sized pneumatic two-fluid atomizers was investigated to determine the effect of gas mass-velocity on the Sauter mean diameter of sprays produced by small diameter liquid jets breaking up in high velocity gas flow. Tests were conducted primarily in the acceleration-wave regime for liquid jet atomization, where it was found that the loss of droplets due to vaporization had a marked effect on drop size measurements. A scattered-light scanner, developed at NASA Lewis Research Center, was used to measure the Sauter mean diameter, D sub 32, which was correlated with nitrogen gas mass-velocity to give the following expression: D (sup -1)(sub 32) = 11.7(rho (sub n) V (sub n)) (sup 1.33). The exponent 1.33 for the gas mass-velocity is identical to that predicted by atomization theory for liquid jet breakup in the acceleration-wave regime.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI ID:
- 5798441
- Report Number(s):
- N-88-23194; NASA-TM-100813; E-3944-1; NAS-1.15:100813; CONF-880898-
- Resource Relation:
- Conference: ICLASS-88: 4. international conference on liquid atomization and spray systems, Sendai (Japan), 22-24 Aug 1988
- Country of Publication:
- United States
- Language:
- English
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