Abstract
Helical flows for a Maxwell fluid are studied between two infinite coaxial circular cylinders, at time t = 0 + ; the inner cylinder begins to rotate around its axis and to slide along the same axis due to the torsional and longitudinal time dependent shear stresses. Exact solutions obtained with the help of finite Hankel transform and, presented under series form, satisfy all imposed initial and boundary conditions. The corresponding solutions for Newtonian fluid are also given as limiting cases. Finally, the influence of pertinent parameters–as well as a comparison between Maxwell and Newtonian fluids–on the velocity components and shear stresses is also analyzed by graphical illustrations.
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