Fig. 5
From: Oscillatory interactions of two spheres in an unbounded couple stress fluid
Drag force versus time t for different values of second couple stress parameters with \(a_2/a_1=1.0,U_2/U_1=1.0,\bar{\eta }=0.01 \delta =1.01\) for moderate frequency at \(\alpha =1.0\) (a) in-phase, (b) out-of-Phase.
