Abstract: Congruent velocity distributions in parallel channel cross sections are assumed in conventional flow theories for screw pumps. That assumption leads to nonuniform pressure distributions along the ...

Abstract: The influence of channel curvature on flow through screw pumps and melt extruders is derived for infinite channel aspect ratios. Flow rate and horsepower relations for flow of Newtonian liquids ...

Abstract: A noniterative finite-difference method for solution of Poisson’s and Laplace’s equations for linear boundary conditions is given. The method is simpler and more accurate than iterative procedures. ...