Abstract
In order to study the flow field changes of ASP (alkaline/surfactant/polymer) solutions with different molecular weights and flow rates when flowing through the annular depressurization slot in the laboratory, the annulus pipeline model was designed based on the principle of similarity. The particle image velocimetry (PIV) system was used to continuously capture the transient images when the ASP solution flows in the model under different experimental conditions. Tecplot software was used to analyze and process the nephrograms of the velocity distribution of ASP solution when flowing through the partially pressured injection tool with different depressurization slots. The experimental results showed that the vortex occurred at the bottom of the depressurization slots; the greater the flow rate, the closer the vortex center to the outer wall; higher molecular weight of the polymer in the ASP solution caused larger velocity gradient towards the wall. The number of the slots has no significant effect on the position of the vortex. This experiment provides a new research method for the velocity distribution of the internal flow field in the partially pressured injection tool.
Highlights
The application of the partially pressured injection tool used in Indonesia Limau oil has been limited due to a lack of sufficient theoretical basis for the runner shape design
Compared with the point measurement by Laser Doppler Velocimetry (LDV), particle image velocimetry (PIV) can perform direct surface measurements for the flow field to ensure the accuracy of the measurement and certain spatial resolution
The influence regulations for the inner flow field of the polymer with the weak base have been obtained for three element solutions with different molecular weight, flow rate, and number of slots
Summary
The application of the partially pressured injection tool used in Indonesia Limau oil has been limited due to a lack of sufficient theoretical basis for the runner shape design. Due to a lack of experimental methods, the optimization of the structure of International Journal of Polymer Science the partially pressured injection tool and the flow-field distribution in the depressurization slot of the injection tool were mainly simulated and analyzed by using Fluent numerical simulation software. The influence regulations for the inner flow field of the polymer with the weak base have been obtained for three element solutions with different molecular weight, flow rate, and number of slots. It will help provide guidance for the design of the depressurizing channel in the future
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