Fig. 5
From: Experimental study on the drag reduction performance of sodium alginate in saline solutions
Effects of salt content, sodium alginate concentration, and volumetric flow rate on the drag reduction rate (DR). (a) Response surface plot of DR at a salt mass fraction Cs = 6% under varying concentrations of the drag-reducing agent and flow rates. (b) Response surface plot of DR at a flow rate Q = 400 ml/min under varying salt mass fractions and drag-reducing agent concentrations. (c) Response surface plot of DR at a drag-reducing agent concentration Cp = 1000 ppm under varying salt mass fractions and flow rates.
