The flow field produced by a pitched blade turbine: Characterization of the turbulence and estimation of the dissipation rate

This paper compares various methods which have been used for the estimation of turbulent length scales, and/or the rate of dissipation of turbulence kinetic energy (ε) in stirred tanks. The system examined was a four-blade, 45° pitched blade turbine rotating in a cylindrical, fully baffled tank with velocity measurement by laser Doppler anemometry. Four methods were chosen for experimental application. The methods used, and the principles upon …