Finite time lyapunov exponents and extreme concentration fluctuations in 2d turbulence

The statistics of the Finite time Lyapunov exponent (FTLE) has been investigated in detail in laboratory 2D flows. The balance of the forward and backward FTLE suggests the incompressible nature of the turbulence in both the electromagnetic and Faraday wave driven experiments. The tail in the PDF of the FTLE field is correlated with the extreme...