Observation of the Development of Secondary Features in a Richtmyer–Meshkov Instability Driven Flow

Bernard, Tennille; Truman, C. Randall; Vorobieff, Peter; Corbin, Clint; Wayne, Patrick; Kuehner, G.; Anderson, Michael J.; Kumar, Sanjay

doi:10.1115/1.4027829

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…Downstream, a spike of dense material ejected from the cylinder moves with a high subsonic velocity (∼ 0.3M in terms of the local Mach number [29]). Vortex structures at the end of the spike have been observed in experiment ("lion's tail" [29]), however, the adjacent wakelike structure best visible in the centerline plane of Fig. 5 could not be visualized because there was no fluorescent tracer to track it.…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Validation Exercise for Fiesta Code: Evolution of Shock-Driven Instabilities

Romero

Vorobieff

Poroseva

et al. 2021

WIT Transactions on Engineering Sciences

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In this paper, we present simulation results for the three-dimensional, shock-driven Kelvin-Helmholtz instability. Simulations are performed with a Mach 2.0 shock propagating through a finite-diameter cylindrical column of dense gas inclined at an angle θ with respect to the shock plane. After passage of the shock, the gas curtain has accelerated along its axis and a Kelvin-Helmholtz instability forms on the column surface. This is the first known numerical reproduction of this phenomena in three dimensions, which has previously been observed in experiments with an inclined cylindrical gas column. The effects of changes to initial column angle (θ = 0 • , 10 • , 20 • , 30 • ) are explored in detail to complement experimental data. The effects of shock reflection near the base of the column are also examined to identify a possible flow perturbation near the foot which was seen in our previous two-dimensional numerical studies of shock-accelerated inclined gas curtains. The overall flow morphology compares well with experimental data in a cross-sectional plane through the column midpoint and a vertical plane through the column axis. Simulations were performed with FIESTA, an exascale ready, GPU accelerated compressible flow solver developed at the University of New Mexico.

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Section: Resultsmentioning

confidence: 99%

Three-Dimensional Validation Exercise for Fiesta Code: Evolution of Shock-Driven Instabilities

Romero

Vorobieff

Poroseva

et al. 2021

WIT Transactions on Engineering Sciences

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“…The Richtmyer-Meshkov instability has been investigated in numerical and experimental studies. Bernard et al [25] experimentally investigated the primary features of flow developing after a shock acceleration and found that a well-studied method of flow visualization did not produce a flow pattern that matched the numerical model. Liu & Lu [26] investigated the flow instability of viscoelastic annular liquid jets in a radial electric field and found that the jets with reasonable parameters had greater instability.…”

Section: Introductionmentioning

confidence: 99%

Review: Prediction of Unexpected Fluid-Induced Vibration in Pipeline Network

Yamaguchi,

Ohta

2022

WJM

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This review considers unexpected destructive disasters involving fluid power plants, such as nuclear electric power plants and fluid power plants. It specifically addresses the possibility of fluid vibration induced in a pipeline network of such a plant. The authors investigate the flow oscillation induced within a T-junction for laminar steady flow at a Reynolds number less than 10 3 and clarify that there is a periodic fluid oscillation with a constant Strouhal number independent of several flow conditions. Generally, a nuclear electric power plant is constructed using straight pipes, elbows, and T-junctions. Indeed, a T-Junction is a basic fluid element of a pipeline network. The flow in a fluid power plant is turbulent. There are peculiar flow phenomena that occur at high Reynolds numbers, which are also seen in other flow situations; e.g., Kaman vortices are observed around a circular cylinder in low Reynolds numbers, around structures like bridges and downstream of islands in oceans. Although the flow situation of a T-junction and elbow in a fluid power plant, such as the fluid suddenly changing its flow direction is turbulent flow, the authors mention the possibility of the fluid-induced vibration of a pipeline network.

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“…It has been used in several studies of shock wave interactions with a multiphase or heavy gas column [6,7]. The shock tube itself can operate in a horizontal position or can be inclined to any angle θ, up to 45…”

Section: Experimental Arrangement and Diagnosticsmentioning

confidence: 99%

“…The Atwood number is A = (ρ 2 − ρ 1 )/(ρ 2 + ρ 1 ), where ρ 2 and ρ 1 are the densities of the heavy and light gas, respectively. For SF 6 and air, A = 0.67.…”

Section: Experimental Arrangement and Diagnosticsmentioning

confidence: 99%

Oblique shock interaction with a cylindrical density interface

Wayne¹,

Olmstead²,

Vorobieff³

et al. 2015

Computational Methods in Multiphase Flow VIII

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A cylindrical, initially diffuse density interface is formed by injecting a laminar jet of heavy gas into the test section of a shock tube. The injected gas is mixed with a fluorescent gaseous tracer, small liquid droplets, or smoke particles. The shock tube is tilted with respect to the horizontal. Thus the axis of the gravitystabilized heavy gas jet is at an oblique angle with the plane of the arriving shock front. The flow structure forming after the oblique shock wave interaction with the column of heavy gas is revealed by visualization in multiple planes. We observe the formation of the well-known counter-rotating vortex columns (same as caused by normal shock waves). However, along with them, periodic co-rotating vortices form in the vertical plane in the flow downstream of the oblique shock. The size of these vortices varies both with the Mach number and with the initial angle between the column and the shock front.

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Observation of the Development of Secondary Features in a Richtmyer–Meshkov Instability Driven Flow

Cited by 9 publications

References 15 publications

Three-Dimensional Validation Exercise for Fiesta Code: Evolution of Shock-Driven Instabilities

Three-Dimensional Validation Exercise for Fiesta Code: Evolution of Shock-Driven Instabilities

Review: Prediction of Unexpected Fluid-Induced Vibration in Pipeline Network

Oblique shock interaction with a cylindrical density interface

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