Estimating von-Karman's constant from Homogeneous Turbulence
  A celebrated universal aspect of wall-bounded turbulent flows is the von Karman log-law-of-the-wall, describing how the mean velocity in the streamwise direction depends on the distance from the wall. Although the log-law is known for more than 75 years, the von Karman constant governing the slope of the log-law was not determined theoretically. In this Letter we show that the von-Karman constant can be estimated from homogeneous turbulent data, i.e. without information from wall-bounded flows. 
T.S. Lo, Victor S. L'vov, Anna Pomyalov and Itamar Procaccia   (Department of Chemical Physics, The Weizmann Institute f Sci...