Some Aspects of Gas-Particles Jets in a Cross Flow.
BELL AEROSPACE CO BUFFALO N Y
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The concept of an equivalent gas jet is developed for the case that the particles are small enough relative to the size of the jet to be able to follow substantially the flow of the carrier gas. This concept is shown to be applicable if the injection velocity of the particles is greater than about 40 of the jet velocity. Experiments with 33-micrometers glass beads carried by a nitrogen jet of about 3 mm diameter are described. Velocities of the carrier gas and of the cross stream range over several tens metres per second, and the particle flow rate varies between 2.3 and 25 times that of the carrier gas. Under these conditions the particles were found to separate from the carrier gas. Therefore, they should be treated as free particles, although the carrier gas transports them to an effective injection point. Thus, there are several possible situations which require different methods of analysis. Problems remaining for further study are outlined. Author
- Fluid Mechanics