Comment on “Linear stability of a rotating channel flow subjected to a static magnetic field” [Phys. Fluids 34, 054116 (2022)]

Comment on “Linear stability of a rotating channel flow subjected to a static magnetic field” [Phys. Fluids 34, 054116 (2022)]

Recently, Sengupta and Ghosh [“Linear stability of a rotating channel flow subjected to a static magnetic field,” Phys. Fluids 34, 054116 (2022)] published a linear stability analysis of a pressure-driven channel flow, which is subject to rotation around a spanwise axis and a uniform magnetic field...

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Veröffentlicht in:Physics of fluids (1994) 2022-09, Vol.34 (9)
1. Verfasser: Priede, Jānis
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Sprache:eng
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Channel flow
Flow stability
Fluid flow
Magnetic fields
Magnetohydrodynamics
Rotation
Stability analysis
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description Recently, Sengupta and Ghosh [“Linear stability of a rotating channel flow subjected to a static magnetic field,” Phys. Fluids 34, 054116 (2022)] published a linear stability analysis of a pressure-driven channel flow, which is subject to rotation around a spanwise axis and a uniform magnetic field applied in the same direction. Unfortunately, the formulation of the magnetohydrodynamic part of the problem contains an elementary error, which makes the obtained results unphysical. The error is due to unfounded omission of the electric potential contribution in the induced electric current which, thus, does not satisfy the charge conservation.
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Channel flow
Flow stability
Fluid flow
Magnetic fields
Magnetohydrodynamics
Rotation
Stability analysis
title Comment on “Linear stability of a rotating channel flow subjected to a static magnetic field” [Phys. Fluids 34, 054116 (2022)]
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