Research Article

Research of Flow Field of Alkaline/Surfactant/Polymer Solution in the Annular Depressurization Slot by PIV Experiment

Figure 7

Velocity nephograms of the polymer solution that flowed through the partially pressured injection tool with different number of slots.
(a) 5 pressure reduction trough
(b) 10 pressure reduction trough
(c) 18 pressure reduction trough