Effect of polymer type and mixing of polymers on drag reduction in turbulent pipe flow

الملخص EN

The paper reports on studies on effect of the type of polymer on drag reduction.

The study conducted through circular pipe using Carboxy Methyl Cellulose (CMC), Xanthan gum (XG) and their mixing in equal ratios as additives in pipe of diameter 0.0381m.

The study covered range of parameters like concentration, mean velocity and angle of inclination of pipe.

The maximum drag reduction observed was about 58%, 46% and 46% for the three polymers respectively.

It is found that the drag reduction for the mixture is close to the drag reduction for XG polymer.

The SPSS program has been used for correlate the data that have been obtained.

The drag reduction percentage is correlated in terms of Reynolds number Re, additive concentration C (ppm) and angle of inclination of pipe (deg), and the relations obtained is mentioned.