Idealized KH Billow Initialization using Tanh Lateral Displacements

Here a small-amplitude initial distortion to the shear layer is used to encourage KH billow formation with hyperbolic tangent excursions in the lateral direction. Two billows are used and the tanh excursions are aligned (i.e. not staggered along the billow length). The width of the tanh function is 8 and billow spacing is 12.56. The Reynolds number is 2500 and the Richardson number is 0.05.

This is an imaging of the study i_prob14.