ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A device has been developed for generating well-defined, one-dimensional streams of small (200–1000 μm), mono-sized droplets of a variety of fuels. The droplets produced are well separated (〉30 droplet diameters), making this technique well suited to experimental combustion studies of unsupported, isolated droplets. This method has been used successfully to generate droplets of light and mid-distillate petroleum fuels, heavy oils, boron/JP-10 slurries, and coke/oil slurries, for a range of combustion studies. The principle of operation of the device is the aerodynamic stripping of incompletely formed droplets emerging from the tip of a capillary/fine wire which resides in the throat of a venturi or convergent nozzle. By varying the fuel flow rate through the capillary, the gas flow rate through the nozzle, and the diameter of the capillary, precise control of the initial droplet size, spacing, frequency, and velocity can be achieved. Design criteria, exemplary results, and a brief survey of other droplet generating schemes are presented, along with a description of the integration of this device into a laboratory combustion apparatus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1140376
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