Journal ArticleDOI
Shock formation by compressible vortex ring impinging on a wall
TLDR
In this paper, the type of vortex ring treated here is generated by a shock produced in a shock tube and then emitted from the tube into the atmosphere, and the flow field near the wall has been clarified from the experimental and numerical results.About:
This article is published in Fluid Dynamics Research.The article was published on 1997-09-01. It has received 33 citations till now. The article focuses on the topics: Vortex ring & Starting vortex.read more
Citations
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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.
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Experimental investigations of compressible vortex loops
TL;DR: Schlieren et al. as discussed by the authors used shadowgraphy and particle image velocimetry techniques to visualize and quantify the induced flow field generated by a shock tube with various nozzle geometries.
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Time-resolved visualization of shock---vortex systems emitted from an open shock tube
TL;DR: This classical problem of shock–vortex interaction has been visualized in unprecedented detail and temporal resolution by means of time-resolved shadow, schlieren and shearing interferometry sequences obtained with a newly developed ultrahigh-speed color video camera.
Journal ArticleDOI
Compressible vortex loops: Effect of nozzle geometry
TL;DR: In this article, the behavior of vortex loops of different shapes, generated due to the diffraction of a shock wave from a shock tube with different exit nozzle geometries, was investigated.
References
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High resolution schemes for hyperbolic conservation laws
TL;DR: In this article, a class of new explicit second order accurate finite difference schemes for the computation of weak solutions of hyperbolic conservation laws is presented, which are obtained by applying a nonoscillatory first order accurate scheme to an appropriately modified flux function.
A class of high resolution explicit and implicit shock-capturing methods
TL;DR: A unified and generalized formulation of a class of high-resolution, explicit and implicit shock capturing methods to illustrate their versatility in various steady and unsteady complex shock waves, perfect gases, equilibrium real gases and nonequilibrium flow computations is attempted.
Journal ArticleDOI
The impact of a vortex ring on a wall
TL;DR: In this article, the flow induced by a vortex ring approaching a plane wall on a trajectory normal to the wall is investigated for an incompressible fluid, which is otherwise stagnant.
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The focusing of weak shock waves
TL;DR: In this article, the authors investigated the behavior of converging weak shock waves near three different kinds of focus, and found that the behavior at the focus is nonlinear and that diffraction shocks participate in a Mach reflexion process near the focus, whose development is determined by competition between the convergence of the sides of the focusing front and acceleration of its central portion.
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Vortex rings impinging on walls : axisymmetric and three-dimensional simulations
Paolo Orlandi,Roberto Verzicco +1 more
TL;DR: In this article, a simulation of vortex rings impinging on flat boundaries revealed the same features observed in experiments, and the results for the impact with a free-slip wall compared very well with previous numerical simulations that used spectral methods.