论文标题
评论“经受静态磁场的旋转通道流的线性稳定性” [Phys。流体34，054116（2022）]
Comment on "Linear stability of a rotating channel flow subjected to a static magnetic field" [Phys. Fluids 34, 054116 (2022)]
论文作者
论文摘要
最近，Sengupta和Ghosh [Phys。流体34，054116，（2022）]对压力驱动的通道流进行了线性稳定性分析，该分析可能会围绕跨度轴旋转，并且在同一方向上施加了均匀的磁场。不幸的是，该问题的磁流失动力部分的配方包含一个基本误差，这使得获得的结果非物理。错误是由于诱导电流中电势贡献的毫无根据的省略，因此无法满足电荷保护。
Recently, Sengupta and Ghosh [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.
