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	1973
Abstract	The main problem occurring at cylindrical liner acceleration by azimuthal magnetic field is its motion distortion caused by the combination of Rayleigh-Taylor and sausage instabilities, which, in principle, can lead to a complete liner destruction. The strength of the material can inhibit the development of such instabilities; however, as far as the melted liner-section thickness increases due to Ohmic heating, 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 liner demonstration series (LD), hydro-features series (HF), and near term liner experiments series (NTLX) experiments, the X-ray images for the HF and NTLX experiments showed the liners' homogeneity, suggesting that their motion was comparatively stable, whereas the X-ray images made for the LD experiments showed that the liners' external surfaces were seriously distorted due to the perturbation growth. In this paper, 2D MHD computations are presented for the liner LD, HF, and NTLX implosions with consideration of the perturbation growth. Initial perturbations are assumed 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 a smaller perturbation growth, than those of the LD experiments, if the value of the perturbation growth is determined over the perturbation development on the internal surface. A comparison of the computed shape of the external surface for the HF and LD shows that in the computations, as well as in the experiments, the HF liner remains weakly perturbed, whereas the LD liner is significantly distorted. However, for the LD and NTLX, the external surfaces of the liners remain qualitatively similar and rather perturbed even at extremely refined grid. Hence, the issue of greater perturbation development in the LD experiments may be considered as explainable to some extent by the 2D computations, but the degree of computation and experimental-data agreement requires additional improvement. The 2D computation results for the liners driven by a 40-cm-diameter 15-module disk explosive magnetic generator (DEMG) show that in these conditions, the perturbation growth can be significant for the liners with an aspect ratio higher than 20, and therefore, it is necessary to study the liner stability for the liner DEMG experiments' designing.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	4
Ending Page	9
Page Count	6
File Size	646440
File Format	PDF
ISSN	00933813
Volume Number	36
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stability analysis Hafnium Acceleration X-ray imaging Magnetic analysis Magnetic fields Magnetic materials Heating Magnetohydrodynamics Grid computing 2-D MHD computations Implosion of condensed liners Rayleigh–Taylor (RT) instability
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Rayleigh-Taylor instability with a sheared flow boundary layer

Imploding Liner Compression of Plasma: Concepts and Issues

The non-linear growth of the magnetic Rayleigh-Taylor instability

Magnetically driven Rayleigh-Taylor instability with acceleration gradient

Results and Prospects of Material Strength Studies on Electrophysical Facilities Based on Perturbation Growth in Liner Systems

Rayleigh-Taylor instability of a magnetic tangential discontinuity in the presence of flow

On Linear Instability and Stability of the Rayleigh–Taylor Problem in Magnetohydrodynamics

Modeling of implosion dynamics and the magneto-Rayleigh-Taylor instability in single and double liner-on-target, gas-puff Z-pinches

Rayleigh-Taylor instabilities with sheared magnetic fields in partially ionised plasmas

Analysis of the Liner Stability in Various Experiments

Similar Documents

Rayleigh-Taylor instability with a sheared flow boundary layer

Imploding Liner Compression of Plasma: Concepts and Issues

The non-linear growth of the magnetic Rayleigh-Taylor instability

Magnetically driven Rayleigh-Taylor instability with acceleration gradient

Results and Prospects of Material Strength Studies on Electrophysical Facilities Based on Perturbation Growth in Liner Systems

Rayleigh-Taylor instability of a magnetic tangential discontinuity in the presence of flow

On Linear Instability and Stability of the Rayleigh–Taylor Problem in Magnetohydrodynamics

Modeling of implosion dynamics and the magneto-Rayleigh-Taylor instability in single and double liner-on-target, gas-puff Z-pinches

Rayleigh-Taylor instabilities with sheared magnetic fields in partially ionised plasmas

Analysis of the Liner Stability in Various Experiments