We have studied the nature of the magnetohydrodynamic (MHD) kink waves in magnetically twisted flux tubes in the presence of plasma flow. To do this, the eigenfunctions of the kink oscillations have been determined using the dispersion relation and the boundary conditions of the tube. Then the components of the magnetic-tension force and the gradient of the pressure force have been obtained to determine the nature of the waves. For the waves with positive azimuthal wavenumber, the magnetic twist and plasma flow have opposite effects on the ratio of restoring forces and the wave has a mixed nature. However, for the waves with negative azimuthal wavenumber the magnetic twist and plasma flow strengthen the effects of each other in increasing the ratio of the magnetic-tension force to the gradient of the pressure force, and they make the nature of the wave more Alfvénic. In the presence of both plasma flow and magnetic twist, in the case of the waves with negative azimuthal wavenumber, for some specific values of the tube parameters, the magnetic-tension force becomes the dominant restoring force both in the radial and azimuthal directions, and the wave can be considered as an Alfvén wave in the internal region of the tube. However, in the case of the waves with positive azimuthal wavenumber, the nature of the wave remains mixed under all circumstances.

我们研究了在存在等离子体流的情况下磁扭曲通量管中磁流体动力学 (MHD) 扭结波的性质。为此，扭结振荡的本征函数已使用色散关系和管的边界条件确定。然后得到磁张力的分量和压力的梯度来确定波的性质。对于具有正方位角波数的波，磁扭曲和等离子体流对恢复力比的影响相反，波具有混合性质。然而，对于具有负方位角波数的波，磁扭曲和等离子体流在增加磁张力与压力梯度之比方面加强了彼此的作用，它们使波浪的性质更加阿尔芬奇。在等离子体流和磁扭曲同时存在的情况下，在具有负方位角波数的波的情况下，对于管参数的某些特定值，磁张力成为径向和方位角方向上的主要恢复力，并且波可以被认为是管内部区域的阿尔文波。然而，在具有正方位角波数的波的情况下，波的性质在所有情况下都保持混合。波可以被认为是管内部区域的阿尔文波。然而，在具有正方位角波数的波的情况下，波的性质在所有情况下都保持混合。波可以被认为是管内部区域的阿尔文波。然而，在具有正方位角波数的波的情况下，波的性质在所有情况下都保持混合。