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TECHNICAL PAPERS: Jets and Wakes

Self-Preserving Properties of Unsteady Round Nonbuoyant Turbulent Starting Jets and Puffs in Still Fluids

[+] Author and Article Information
R. Sangras, O. C. Kwon, G. M. Faeth

Department of Aerospace Engineering, The University of Michigan, Ann Arbor, MI 48109-2140

J. Heat Transfer 124(3), 460-469 (May 10, 2002) (10 pages) doi:10.1115/1.1421047 History: Received February 02, 2001; Revised August 03, 2001; Online May 10, 2002
Copyright © 2002 by ASME
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References

Figures

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Sketch of the test apparatus for round nonbuoyant starting jets, puffs, and interrupted jets in still environments
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Flow rate transients due to starting and stopping of the source syringe pump
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Streamwise penetration distances as a function of time for round nonbuoyant turbulent starting (Q0/(A0d)=∞) and interrupted (I) jets in still environments
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Virtual origin locations of interrupted jets as a function of injected liquid volume for round nonbuoyant turbulent puffs and interrupted jets in still environments
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Visualization of a round turbulent nonbuoyant puff in a still environment (d=6.4 mm,u0=930 mm/s,Re0=6000,Q0/(A0d)=50)
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Radial penetration distances of jets as a function of streamwise distances for steady turbulent round nonbuoyant jets in still environments
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Radial penetration distances of trailing jets as a function of streamwise penetration distances for round nonbuoyant turbulent starting jets
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Radial penetration distances of jet tips as a function of streamwise penetration distances for round nonbuoyant turbulent starting jets in still environments
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Streamwise penetration distances of jets as a function of time for round nonbuoyant turbulent starting jets in still environments
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Visualization of a round turbulent nonbuoyant starting jet in a still environment (d=6.4 mm,u0=460 mm/s, and Re0=3000)
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Sketches of round turbulent flows from starting jets and puffs
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Streamwise penetration distances of puffs as a function of time for round nonbuoyant turbulent puffs in still environments
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Radial penetration distances of puffs as a function of streamwise penetration distances for round nonbuoyant turbulent puffs in still environments

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