Flow visualization of vortex rings from measured velocity fields
نویسندگان
چکیده
منابع مشابه
Volumetric velocity measurements of vortex rings from inclined exits
Vortex rings were generated by driving pistons within circular cylinders of inner diameter D = 72.8 mm at a constant velocity U0 over a distance L = D. The Reynolds number, U0L/(2m), was 2500. The flow downstream of circular and inclined exits was examined using volumetric 3-component velocimetry (V3V). The circular exit yields a standard primary vortex ring that propagates downstream at a cons...
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A method is presented whereby the translational velocity of a vortex ring can be approximated from the total circulation, impulse, and kinetic energy of the vortex system. Assuming a uniform vorticity density, these bulk quantities define a unique stable vortex ring configuration, and the translational velocity can be inferred from this configuration and the system scaling. Here, the accuracy o...
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ژورنال
عنوان ژورنال: Journal of the Visualization Society of Japan
سال: 1990
ISSN: 1884-037X,0916-4731
DOI: 10.3154/jvs.10.1supplement_83