Exact analytic solutions for a class of unsteady unidirectional flows and t
he frictional forces of an incompressible second grade fluid are obtained.
The periodic Poiseuille flow and frictional force due to an oscillating pre
ssure gradient are examined. The flows and the frictional forces between tw
o parallel boundaries are also studied. (C) 2000 Elsevier Science Ltd. All
rights reserved.