Fig. 4.
A streamline in the streaming flow induced by a bubble–particle doublet, viewed from the side (Upper) and the top (Lower). The arrow indicates the position p = (2a,0, hp) of the stokeslet parallel to the wall, where hp/a = 0.75 and the stokeslet strength is s = 0.15 times that of the vertical stokeslet induced by the bubble.
