Effects of axial boundary conductivity on a free StewartsonShercliff layer
Abstract
The effects of axial boundary conductivity on the formation and stability of a magnetized free StewartsonShercliff layer (SSL) in a short TaylorCouette device are reported. As the axial field increases with insulating endcaps, hydrodynamic KelvinHelmholtztype instabilities set in at the SSLs of the conducting fluid, resulting in a much reduced flow shear. With conducting endcaps, SSLs respond to an axial field weaker by the square root of the conductivity ratio of endcaps to fluid. Flow shear continuously builds up as the axial field increases despite the local violation of the Rayleigh criterion, leading to a large number of hydrodynamically unstable modes. In conclusion, numerical simulations of both the mean flow and the instabilities are in agreement with the experimental results.
 Authors:

 Princeton Univ., Princeton, NJ (United States)
 Publication Date:
 Research Org.:
 Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1459553
 Alternate Identifier(s):
 OSTI ID: 1455107
 Grant/Contract Number:
 AST1312463; NNH15AB25I; AC0209CH11466
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physical Review E
 Additional Journal Information:
 Journal Volume: 97; Journal Issue: 6; Journal ID: ISSN 24700045
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 42 ENGINEERING
Citation Formats
Caspary, Kyle J., Choi, Dahan, Ebrahimi, Fatima, Gilson, Erik P., Goodman, Jeremy, and Ji, Hantao. Effects of axial boundary conductivity on a free StewartsonShercliff layer. United States: N. p., 2018.
Web. doi:10.1103/PhysRevE.97.063110.
Caspary, Kyle J., Choi, Dahan, Ebrahimi, Fatima, Gilson, Erik P., Goodman, Jeremy, & Ji, Hantao. Effects of axial boundary conductivity on a free StewartsonShercliff layer. United States. doi:10.1103/PhysRevE.97.063110.
Caspary, Kyle J., Choi, Dahan, Ebrahimi, Fatima, Gilson, Erik P., Goodman, Jeremy, and Ji, Hantao. Wed .
"Effects of axial boundary conductivity on a free StewartsonShercliff layer". United States. doi:10.1103/PhysRevE.97.063110. https://www.osti.gov/servlets/purl/1459553.
@article{osti_1459553,
title = {Effects of axial boundary conductivity on a free StewartsonShercliff layer},
author = {Caspary, Kyle J. and Choi, Dahan and Ebrahimi, Fatima and Gilson, Erik P. and Goodman, Jeremy and Ji, Hantao},
abstractNote = {The effects of axial boundary conductivity on the formation and stability of a magnetized free StewartsonShercliff layer (SSL) in a short TaylorCouette device are reported. As the axial field increases with insulating endcaps, hydrodynamic KelvinHelmholtztype instabilities set in at the SSLs of the conducting fluid, resulting in a much reduced flow shear. With conducting endcaps, SSLs respond to an axial field weaker by the square root of the conductivity ratio of endcaps to fluid. Flow shear continuously builds up as the axial field increases despite the local violation of the Rayleigh criterion, leading to a large number of hydrodynamically unstable modes. In conclusion, numerical simulations of both the mean flow and the instabilities are in agreement with the experimental results.},
doi = {10.1103/PhysRevE.97.063110},
journal = {Physical Review E},
number = 6,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}
Figures / Tables:
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Works referencing / citing this record:
Experimental confirmation of the standard magnetorotational instability mechanism with a springmass analogue
journal, January 2019
 Hung, Derek M. H.; Blackman, Eric G.; Caspary, Kyle J.
 Communications Physics, Vol. 2, Issue 1
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