Fig. 12
From: Oscillatory interactions of two spheres in an unbounded couple stress fluid

Contours of stream function (a) \(\bar{\eta }=\bar{\eta }'=0.01, U_2/U_1=2, \alpha =4\) and (b) \(\bar{\eta }=\bar{\eta }'=0.01, U_2/U_1=4, \alpha =10\).
From: Oscillatory interactions of two spheres in an unbounded couple stress fluid

Contours of stream function (a) \(\bar{\eta }=\bar{\eta }'=0.01, U_2/U_1=2, \alpha =4\) and (b) \(\bar{\eta }=\bar{\eta }'=0.01, U_2/U_1=4, \alpha =10\).