Experimental Study of the Seeding Mass Quantity Effect on the PIV Measurements Applied on a Stirred Vessel Equipped by a Rushton Turbine

A particle image velocimetry (PIV) technique is used to study the local hydrodynamics in a mechanically stirred vessel generated by a Rushton turbine. The purpose of the present study is to quantify and to reduce errors in two dimensional particle image velocimetry (PIV). The accuracy of the velocity measurements depends on different parameters such as the seeding mass quantity, the size of the PIV measurement area, the time interval between two laser slices, and the spatial resolution. In this paper, the effect of the seeding mass quantity was analysed. More particularly, four different mass quantities of spherical polyamide particles were used and the optimum quantity is determined experimentally.