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Experimental study into the Rayleigh–Taylor turbulent mixing zone heterogeneous structure

Published online by Cambridge University Press:  03 March 2004

Yu.A. KUCHERENKO ,
A.P. PYLAEV ,
V.D. MURZAKOV ,
A.V. BELOMESTNIH ,
V.N. POPOV  and
A.A. TYAKTEV
Yu.A. KUCHERENKO
Affiliation:
Russian Federal Nuclear Center, Academician E.I. Zababakhin, All-Russian Research Institute of Technical Physics, Chelyabinsk, Russia
A.P. PYLAEV
Affiliation:
Russian Federal Nuclear Center, Academician E.I. Zababakhin, All-Russian Research Institute of Technical Physics, Chelyabinsk, Russia
V.D. MURZAKOV
Affiliation:
Russian Federal Nuclear Center, Academician E.I. Zababakhin, All-Russian Research Institute of Technical Physics, Chelyabinsk, Russia
A.V. BELOMESTNIH
Affiliation:
Russian Federal Nuclear Center, Academician E.I. Zababakhin, All-Russian Research Institute of Technical Physics, Chelyabinsk, Russia
V.N. POPOV
Affiliation:
Russian Federal Nuclear Center, Academician E.I. Zababakhin, All-Russian Research Institute of Technical Physics, Chelyabinsk, Russia
A.A. TYAKTEV
Affiliation:
Russian Federal Nuclear Center, Academician E.I. Zababakhin, All-Russian Research Institute of Technical Physics, Chelyabinsk, Russia
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Abstract

Experiments conducted on the SOM facility at the Russian Federal Nuclear Center–VNIITF, concerning the turbulent mixing induced by the Rayleigh–Taylor instability in a three-layer system of immiscible liquids are described. The fluids are contained in a small tank 6.4 cm × 5.4 cm × 12 cm, which is accelerated vertically downward by a gas gun. The mixing layer evolution was imaged by seeding one of the fluids with particles and using a bidirectional light sheet method (refractive index matching was used to minimize measurement errors). Experiments were performed for two different accelerations (g = 350 g0 and g = 100 g0, where g0 = 980 cm/s2, and the acceleration decreases with distance traveled), and with aqueous solutions of glycerin and benzene (with density ratio 1.6). The lower, middle, and upper layers were a sodium hyposulfite–glycerin solution, a water–glycerin solution, and benzene, respectively. The glycerin solution was seeded with particles. The principal objective of the experiments was to obtain the distribution of fluid particle sizes arising from the mixing of the immiscible fluids.

Keywords

Heterogeneous structureSOM facilityTurbulent mixing
Type
Research Article
Information
Laser and Particle Beams , Volume 21 , Issue 3 , July 2003 , pp. 375 - 379
Copyright
© 2003 Cambridge University Press

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References

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