NDLI: Experimental study on a compressible vortex ring in collision with a wall

Content Provider	Springer Nature Link
Author	Thangadurai, Murugan Das, Debopam
Copyright Year	2012
Abstract	Head-on collision of the compressible vortex ring with a wall is studied experimentally for shock Mach number (M) varying from 1.31 to 1.85 using high-speed smoke flow visualizations. The compressible vortex ring is generated from the open end of a short driver section shock tube. At first, the interaction of the isolated compressible vortex ring with wall is characterized using diameter and translational velocity of the vortex ring and verified with flow visualizations. Different events such as vortex ring impingement on wall, wall vortex growth, and lift-off are identified from the change in slope of diameter and translational velocity. Next, the wall interaction of primary vortex ring embedded with counter rotating vortex ring (CRVR) is studied for M = 1.7 and 1.85. It has been observed that the presence of CRVR strongly influences the flow structure and formation of wall vortices. A case where CRVR first impinges on the wall showed a lesser lift-off due to formation of weak wall vortices. Strong scattered waves produced during wall interaction at high M (1.7 and 1.85) interact with trailing jet and create a secondary vortex ring at the trailing jet. Pressure measurements along the wall surface have also showed the impingement, wall vortex growth, lift-off besides shocklet formation.Graphical Abstract text
Starting Page	321
Ending Page	332
Page Count	12
File Format	PDF
ISSN	13438875
Journal	Journal of Visualization
Volume Number	15
Issue Number	4
e-ISSN	18758975
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-08-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Compressible vortex ring Wall interaction Smoke flow visualization Shock tube Computer Imaging, Vision, Pattern Recognition and Graphics Classical Continuum Physics Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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