Experimental Study of Lagrangian Velocity and Energy Statistics in Inhomogeneous Turbulence

We study Lagrangian statistics in a flow stirred by two oscillating grids. We quantify the dependence of small scales on the inhomogeneous large scales in a complex flow. We also describe the method we developed to study the measurement volume bias while investigating Lagrangian structure functions. We identify the important factors in energy transport by estimating the terms of the turbulent kinetic energy equation.