Experiments in turbulent transport and mixing

The evolution of experimental turbulence research and some of the instruments connected with it are reviewed briefly. Measurements of several moments, one- and two-point correlation functions, spectra, integral scales, microscales, and probability densities of the turbulent velocities, temperature fluctuations, and temperature-velocity products are reported. Integral scale ratio, velocity and temperature fields behind a turbulence generating grid with alternate rods heated are compared with prior data behind grids with every rod heated. Moderate to small Reynolds number range of isotropic turbulence show the streamwise velocity derivative skewness factor to increase with decreasing Reynolds number. This trend was found for 150 greater than or equal to R sub lambda greater than or equal to 4.