| Abstract: | The flow structure in the developing region of a turbulent jet has been examined using particle image velocimetry methods, considering the flow at steady state conditions. The velocity fields were integrated to determine the ratio of the entrained air speed to the jet speed, which was approximately 0.03 for a range of Mach numbers up to 0.89 and. Reynolds numbers up to 217,000. This range of experimental Mach and Reynolds numbers is higher than previously considered for high-accuracy entrainment measures, particularly in the near-vent region. The entrainment values are below those commonly used for geophysical analyses of volcanic plumes, suggesting that existing 1-D models are likely to understate the tendency for column collapse. Copyright 2009 by the American Geophysical Union. |
| Genre: | Article |
| ProdID: | 70037072 |
| Citation Author: | Solovitz, S. A.; Mastin, L. G. |
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| Citation Issue: | 10 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geophysical Research B: Solid Earth |
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| Citation Search Results Text: | Experimental study of near-field air entrainment by subsonic volcanic jets; 2009; Article; Journal; Journal of Geophysical Research B: Solid Earth; Solovitz, S. A.; Mastin, L. G. |
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| Citation Volume: | 114 |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Experimental study of near-field air entrainment by subsonic volcanic jets; 2009; Article; Journal; Journal of Geophysical Research B: Solid Earth; Solovitz, S. A.; Mastin, L. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1029/2009JB006298 |
| Date Other: | Thu, 1 Jan 2009 00:00 -0600 |
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