Fig. 13
From: Oscillatory interactions of two spheres in an unbounded couple stress fluid
Contours of stream function (a) \(\bar{\eta }=0.01,\bar{\eta }'=0.1, U_2/U_1=0.1, \alpha =2\) and (b) \(\bar{\eta }=0.5,\bar{\eta }'=0.1, U_2/U_1=5, \alpha =60\).
