A NOTE ON STOKES-FLOW DUE TO A LINE ROTLET

The results developed by Watson [1] are interpreted to indicate how th e slow viscous flow due to the rotation of a small. circular cylinder in the presence of a stationary cylinder can be calculated. It is show n how the stream function is given as a combination of the force-free representations corresponding to a line rotlet and a line stokeslet ou tside the stationary body, plus the streaming flow past the body. The coefficients which multiply these representations are calculated by te chniques already described by Watson.