Visualization of fan-spreading in two-phase jet flows |
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| Authors: | C K Zoltani A F Bicen |
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| Institution: | 1. Ballistic Research Laboratory, Aberdeen Proving Ground, 21005-5066, MD, USA
2. Imperial College of Science, Technology and Medicine, Exhibition Road, SW7 2BX, London, Great Britain
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| Abstract: | Flow visualizations obtained in a two-phase jet flow with 80  m particles at a mass loading of 5% revealed the following.| 1. |
Particles exited the jet tube in straight trajectories with  fan-spreading angles of up to ±30°. The velocities of those particles having large angles were considerably lower (40% or more) than the mean particle velocity of the bulk flow.
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Reducing the mean particle velocity at the exit from 25 m/s to 7 m/s reduced the fan-spreading effect with a maximum angle of around 10°.
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