Journal ArticleDOI
Propagation and interaction of shock-generated vortices
M. Brouillette,C. Hébert +1 more
TLDR
In this paper, the propagation and interaction mechanisms demonstrated by compressible vortex rings are explored with spark shadowgraph and schlieren photography, and the vortical flow regimes produced by the impulse of a shock wave emerging from the open end of a tube are examined.About:
This article is published in Fluid Dynamics Research.The article was published on 1997-09-01. It has received 69 citations till now. The article focuses on the topics: Vortex ring & Starting vortex.read more
Citations
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Journal ArticleDOI
Vortex ring formation at the open end of a shock tube: A particle image velocimetry study
TL;DR: In this paper, the early evolution of the vortex ring for three-exit shock Mach numbers, 1.1, 1 2, and 1.3, was studied using particle image velocimetry, and the results showed that the ring formation is complete at about tUb/D=2, where t is time, Ub is fluid velocity behind shock as it exits the tube and D is tube diameter.
Journal ArticleDOI
Compressible Vortex-Ring Interaction Studies with a Number of Generic Body Configurations
TL;DR: In this paper, an experimental study has been conducted to examine compressible vortex ring structure and propagation, and the interaction of vortex ring with generic-body configurations using high-speed schlieren photography.
Journal ArticleDOI
Head-on collision of shock wave induced vortices with solid and perforated walls
TL;DR: In this article, an experimental study has been conducted to examine the interaction of shock wave induced vortices with a flat plate and a perforated plate, and the experimental results indicated that a region of strong flow development is generated near the wall surface, due to the flow interactions of reflected waves and oncoming induced Vortices.
Journal ArticleDOI
Numerical simulation and PIV study of compressible vortex ring evolution
TL;DR: In this paper, the formation and evolution of a vortex ring generated at the open end of a short driver-section shock tube has been simulated numerically for pressure ratios (PR) of 3 and 7.
Journal ArticleDOI
Role of slipstream instability in formation of counter-rotating vortex rings ahead of a compressible vortex ring
TL;DR: In this article, particle image velocimetry (PIV) measurements and high-order numerical simulations show that CRVRs do not form in the absence of a Mach disk in the sonic underexpanded jet behind the primary vortex ring.
References
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Book
Dynamics and thermodynamics of compressible fluid flow
TL;DR: In this paper, the Hodograph Method for Two-Dimensional, Subsonic Flow with Small Perturbations is used to describe the dynamics of two-dimensional and three-dimensional flow.
Journal ArticleDOI
The instability of short waves on a vortex ring
TL;DR: In this paper, a simple model for the experimentally observed instability of the vortex ring to azimuthal bending waves of wavelength comparable with the core size is presented, and short-wave instabilities are discussed for both the ring and the vortex pair.
Journal ArticleDOI
On the stability of vortex rings
TL;DR: In this article, the stability of vortex rings is investigated both theoretically and experimentally, and the results of the analysis show that a vortex ring in an ideal fluid is almost always unstable and the number of waves around the perimeter in the unstable mode depends upon the size of the vortex core.
Journal ArticleDOI
Colliding vortex rings
T. Fohl,J. S. Turner +1 more
TL;DR: In this article, a theory based on the resonance of the forced motion with the elliptical mode of oscillation of a single vortex was proposed, which was found to be in agreement with the observed behavior.
Related Papers (5)
Experimental Study of the Formation of a Vortex Ring at the Open End of a Cylindrical Shock Tube
F. K. Elder,N. De Haas +1 more