The contacting vortex tubes. The dashed lines are for the inner region. The solid lines with arrows are for the vortex lines, where the contacting and non-contacting opposite-signed pairs separately represent subregion I and subregion II.
The reconnection timescale and viscous decay timescale. The symbol C corresponds to the critical Reynolds number.
The reconnection timescale versus Reynolds number. The solid line is for the theoretical result, and the diamond and circle symbols are for the rescaled DNS results of Garten et al. 4 and Hussain et al.,27 respectively.
The different regimes of the Reynolds number scaling for reconnection time, where the superscript star symbol is for the pure theoretical result.
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