Dynamic motion of a compressible vortex ring

Toyoko Minota

doi:10.1117/12.294516

12 December 1997 Dynamic motion of a compressible vortex ring

Toyoko Minota

Proceedings Volume 3173, Ultrahigh- and High-Speed Photography and Image-based Motion Measurement; (1997) https://doi.org/10.1117/12.294516
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The dynamic motion of a compressible vortex ring is studied by using an optical shadowgraph. A vortex ring treated here is generated by the impulse of a shock wave emerging from the open end of a shock-tube into the atmosphere. A jet flow ejecting from the shock-tube follows behind the vortex ring. The vortex ring moves forward at a self-induced velocity of 135 m/s. A rearward-facing shock wave is formed inside the vortex ring. This shock travels upstream, and leaves the vortex ring. A very thin vortex ring appears on the front interface of the main vortex ring. The instability wave is entrained in the main vortex core filament, and amplified. The disturbed jet flow behind the ring passes through the inside of the ring. As the region between the main vortex core and the interface of the vortex ring is filled with turbulent vortices, the tin vortex ring moves rearward on the interface of the vortex ring. The vortex ring becomes turbulent-like.

Citation Download Citation

Toyoko Minota "Dynamic motion of a compressible vortex ring", Proc. SPIE 3173, Ultrahigh- and High-Speed Photography and Image-based Motion Measurement, (12 December 1997); https://doi.org/10.1117/12.294516

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available