The flow of nondilute suspensions of gas bubbles in nonNewtonian fluids
Abstract
The flow of nondilute suspensions of gas bubbles in nonNewtonian fluids through horizontal tubes are investigated. The investigation centered on the dependence of the flow rate on the properties of the suspension at set values of the pressure drop. A new technique was developed for the generation of suspensions of small, spherical gas bubbles in slowly moving highly viscoelastic solutions of water soluble polymer. Bubbles are produced by electrolysis on a stainless steel grid through which polymer solution flows. Experiments were conducted with aqueous solutions of polyacrylamide at two levels of polymer concentration. Flowrate data are presented in terms of the relative change in flow rate, defined as the difference between the flow rate of the suspension and the flow rate of the pure polymer solution (at the same pressure drop) all divided by the flow rate of the pure solution. In the treatment of the experimental data, two analyses are presented.
 Publication:

Ph.D. Thesis
 Pub Date:
 1978
 Bibcode:
 1978PhDT........61P
 Keywords:

 Bubbles;
 Gas Flow;
 Gases;
 Nonnewtonian Flow;
 Nonnewtonian Fluids;
 Analysis (Mathematics);
 Aqueous Solutions;
 Electrolysis;
 Flow Velocity;
 Gas Density;
 Perturbation Theory;
 Pipes (Tubes);
 Polymers;
 Resistance Heating;
 Shear Stress;
 Fluid Mechanics and Heat Transfer