NDLI: Analysis of the Liner Stability in Various Experiments

Content Provider	IEEE Xplore Digital Library
Author	Buyko, A.M. Garanin, S.F. Karmishin, D.V. Mokhov, V.N. Sokolova, N.V. Yakubov, V.B. Zmushko, V.V.
Copyright Year	2006
Description	Author affiliation: All-Russian Research Institute of Experimental Physics (VNIIEF), Sarov, Russia (Buyko, A.M.; Garanin, S.F.; Karmishin, D.V.; Mokhov, V.N.; Sokolova, N.V.; Yakubov, V.B.; Zmushko, V.V.)
Abstract	The main problem occurring at cylindrical liner acceleration by azimuthal magnetic field is its motion distortion caused by the combination of the Rayleigh-Taylor (RT) and the sausage instabilities, which, in principle, can lead to complete liner destruction. The strength of the material can inhibit the development of such instabilities; however, as far as melted liner section thickness increases due to ohmic heat, the instabilities start to develop fast. The experiments have shown, that even similar acceleration conditions may result in significantly different states of liners with different degrees of their distortion. Thus, in similar conditions of the LD, HF and NTLX experiments, the X-ray images for the HF and NTLX experiments showed liners' homogeneity, suggesting that their motion was comparatively stable, while the X-ray images made for the LD experiments showed that the liners external surfaces were seriously distorted due to the perturbations growth. In this work 2D MHD computations are presented for liner LD, HF and NTLX implosions with consideration of perturbation growth. Initial perturbations were considered as random with characteristic values determined by the resolution of used computational grid. Computation results have shown, that, in fact, the conditions of the HF and NTLX experiments lead to smaller perturbation growth, than those of the LD experiments, if the value of perturbation growth is determined over the perturbation development on the internal surface.
Starting Page	69
Ending Page	75
File Size	317689
Page Count	7
File Format	PDF
ISBN	9781424420612
DOI	10.1109/MEGAGUSS.2006.4530662
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetohydrodynamics Shape Hafnium Grid computing Stability analysis Magnetic materials Magnetic analysis Acceleration Magnetic fields X-ray imaging
Content Type	Text
Resource Type	Article

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