Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The results of measurements using two different particle image velocimetry (PIV) systems (2D‐PIV versus stereo‐PIV) are compared and the obtained data with a coupled CFD simulation are also correlated. A stirred vessel with internal helical coil as additional heat exchanger is analyzed with these settings. Results for the velocity fields and turbulent kinetic energy distribution are shown and the feasibility of stereo‐PIV measurements by using refractive index matching fluid is proven. This investigation provides a good accordance and consistency between the different PIV systems and the related CFD.</jats:p>