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Effects of magnetic fields on magnetohydrodynamic cylindrical and spherical Richtmyer-Meshkov instability

Mostert, W. and Wheatley, V. and Samtaney, R. and Pullin, D. I. (2015) Effects of magnetic fields on magnetohydrodynamic cylindrical and spherical Richtmyer-Meshkov instability. Physics of Fluids, 27 (10). Art. No. 104102. ISSN 1070-6631. http://resolver.caltech.edu/CaltechAUTHORS:20151204-094841119

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Abstract

The effects of seed magnetic fields on the Richtmyer-Meshkov instability driven by converging cylindrical and spherical implosions in ideal magnetohydrodynamics are investigated. Two different seed field configurations at various strengths are applied over a cylindrical or spherical density interface which has a single-dominant-mode perturbation. The shocks that excite the instability are generated with appropriate Riemann problems in a numerical formulation and the effect of the seed field on the growth rate and symmetry of the perturbations on the density interface is examined. We find reduced perturbation growth for both field configurations and all tested strengths. The extent of growth suppression increases with seed field strength but varies with the angle of the field to interface. The seed field configuration does not significantly affect extent of suppression of the instability, allowing it to be chosen to minimize its effect on implosion distortion. However, stronger seed fields are required in three dimensions to suppress the instability effectively.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.4932110DOIArticle
http://scitation.aip.org/content/aip/journal/pof2/27/10/10.1063/1.4932110PublisherArticle
ORCID:
AuthorORCID
Samtaney, R.0000-0002-4702-6473
Additional Information:© 2015 AIP Publishing LLC. Received 29 June 2015; accepted 17 September 2015; published online 6 October 2015. This research was partially supported under Australian Research Council’s Discovery Projects funding scheme (Project No. DP120102378). W. Mostert is supported by an Australian Postgraduate Award. Dr Wheatley is the recipient of an Australian Research Council Discovery Early Career Researcher Award (Project No. DE120102942). This work was partially supported by the KAUST Office of Sponsored Research under Award URF/1/2162-01.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Australian Research CouncilDP120102378
Australian Postgraduate AwardUNSPECIFIED
Australian Research CouncilDE120102942
King Abdullah University of Science and Technology (KAUST)URF/1/2162-01
Record Number:CaltechAUTHORS:20151204-094841119
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151204-094841119
Official Citation:Effects of magnetic fields on magnetohydrodynamic cylindrical and spherical Richtmyer-Meshkov instability Mostert, W. and Wheatley, V. and Samtaney, R. and Pullin, D. I., Physics of Fluids, 27, 104102 (2015), DOI:http://dx.doi.org/10.1063/1.4932110
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:62607
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Dec 2015 18:26
Last Modified:02 Feb 2018 21:55

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