Interaction of a line vortex with a round parachute canopy

Johari, Hamid; Levshin, A. A.

doi:10.1016/j.jfluidstructs.2009.07.005

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…This wake interacts with the bow shock ahead of the canopy and provides the main source of fluid dynamical unsteadiness. An analogous behavior is observed during the interaction of vortical structures with subsonic parachutes (Johari and Levshin, 2009). The intensity of the turbulence carried by the wake is amplified as it is ingested by the canopy bow shock (due to turbulence-shock interaction).…”

Section: Resultsmentioning

confidence: 52%

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

Karagiozis

Kamakoti

Cirak

et al. 2011

Journal of Fluids and Structures

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Section: Resultsmentioning

confidence: 52%

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

Karagiozis

Kamakoti

Cirak

et al. 2011

Journal of Fluids and Structures

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“…The phase averaged velocity maps of the shock locations during the canopy shock oscillations were obtained. Johari and Levshin [15] experimentally studied the interaction of a line vortex aligned with the axis of fully inflated model parachute canopies. The flow visualization results indicated that the core undergoes vortex breakdown when the core trajectory falls in the vicinity of the canopy lip or within the canopy opening.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the effect of Reynolds number on flow structures in the wake of a circular parachute canopy

2014

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In the present study, an experimental study was conducted to characterize the effect of Reynolds number on flow structures in the turbulent wake of a circular parachute canopy by utilizing stereoscopic particle image velocimetry (Stereo-PIV) technique. The parachute model tested in the present study was attached by 28 nylon suspension lines and placed horizontally at the test section center of the wind tunnel. The obtained results showed that with the increase of Reynolds number, the intensities of the vortices near the downstream region of the canopy skirt were found to increase accordingly. However, the increase of Reynolds number did not result in a significant change in ensembleaveraged normalized x-component of the velocity, ensembleaveraged normalized vorticity, normalized Reynolds stress, and normalized turbulent kinetic energy distributions in the turbulent wake of the circular parachute canopy. The obtained results are very useful to further our understanding about the unsteady aerodynamics in the wake of flexible circular parachute canopies and to constitute a reference for CFD computation.

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Measurement of the flow structures in the wakes of different types of parachute canopies

Pasqualini

Jin

Yang³

2017

Acta Mech. Sin.

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Interaction of a line vortex with a round parachute canopy

Cited by 6 publications

References 22 publications

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

Experimental investigation of the effect of Reynolds number on flow structures in the wake of a circular parachute canopy

Measurement of the flow structures in the wakes of different types of parachute canopies

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