Control Possibility of Explosive Vortex Stretching in Vortex Reconnection

Abstract

The explosive vortex stretching of the thread parts in vortex reconnection phenomenon is considered to be related to the occurrence of fast energy cascade in turbulence. In this study, we investigated whether the vortex stretching in the reconnection can be controlled by artificially multiplying the vortex-induced velocity by a control coefficient in numerical simulation. As a result, it was found that the vortex stretching could be suppressed successfully by suppressing the induced velocity. This result provided a technical suggestion for controlling the occurrence of energy cascade in turbulence.