Michele Bartuccelli visited the University of Rome III yesterday (Wednesday 3 December) and gave a talk in the Seminario di Fisica Matematica (seminar webpage here). The title of his talk was “On the crest factor for solutions of PDEs and its relevance in intermittent turbulence.” It was based on joint work with Guido Gentile. In his talk, Michele addressed the question of how to determine if a given solution of a nonlinear PDE shows turbulent or non-turbulent behaviour. He focussed on the case of intermittent turbulence and provided an analytical criterion, based on the crest factor, which captures the essential features of the solutions. The capability of the criterion for discerning between solutions exhibiting time-intermittent turbulence and solutions which either are not turbulent or show statistically stationary turbulence, like, for example, in the case described by Kolmogorov’s theory, was illustrated. The screenshot below is from the Seminar website.