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https://hdl.handle.net/2440/2751
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Type: | Journal article |
Title: | Mixing characteristics of a flapping jet from a self-exciting nozzle |
Author: | Mi, J. Nathan, G. Luxton, R. |
Citation: | Flow, Turbulence and Combustion, 2001; 67(1):1-23 |
Publisher: | Kluwer Academic Publ |
Issue Date: | 2001 |
ISSN: | 1386-6184 |
Abstract: | Experimental results of the mixing characteristics of a low-frequency flapping jet from a self-exciting nozzle are presented. The simple fluidic device used to generate the flapping motion is also described. The nozzle contains no external trigger and, unlike the flip-flop nozzle of Viets, contains no external feedback path. Both conventional and conditional averaging schemes are employed to characterise the turbulentmixing characteristics of the jet using data obtained from hot-wire anemometry. Flow-visualisation is used to characterise the flapping motion. It is revealed that the dynamic flapping motion enhances the large-scale mixing of the jet while concurrently suppressing the generation of the fine-scale turbulence. The results also indicate that high turbulence intensities, initiated by the flapping motion, are sustained even in the far-field flow region. |
Keywords: | Fluidic nozzle oscillating jet turbulent mixing |
Description: | The original publication can be found at www.springerlink.com |
DOI: | 10.1023/A:1013544019463 |
Published version: | http://dx.doi.org/10.1023/a:1013544019463 |
Appears in Collections: | Aurora harvest 2 Environment Institute Leaders publications Mechanical Engineering publications |
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