The three-dimensional revolving flow of a particle-fluid suspension
above a plane surface has been considered. The flow
represents an extension of the classical B¨ odewadt flow to a twofluid
problem. The governing equations for the two phases are
coupled through an interaction force with the particle relaxation
time t as a free parameter. By means of a similarity transformation,
the coupled set of non-linear ODEs becomes a two-point
boundary value problem. The numerical results showed that the
radial inward particle velocity increased whereas the circumferential
velocity decreased by shortening t, thereby strengthening
the spiralling particle motion. On the contrary, the fluid motion
was reduced as a result of the particle-fluid interactions.
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .