This special issue of Physics of Fluids celebrates the 75th birthday of Professor Katepalli Raju Sreenivasan, popularly known as Sreeni, a distinguished figure whose intellectual influence extends broadly across fluid dynamics, statistical physics, applied mathematics, and beyond. It is a privilege to introduce this collection of papers, contributed by colleagues, former students, and researchers deeply influenced by his work, reflecting the profound respect and admiration he commands within the scientific community.
Girimaji et al. (Wed,) studied this question.