ABSTRACT
In order to study the throughflow of an ERF (modeled by viscoplastic fluids) in the thin clearance between surfaces of revolution, the formulae defining the pressure distribution p are derived by means of the method of averaged inertia. For the particular cases examined here the pressure distribution depends on the modified Reynolds number Rx and furthermore on the ER plasticity number K0N and the non-linearity index N . It follows from the figures that the inertia effect is relatively large and it may be concluded that for the flows similar to Newtonian fluids (N > I jRTojv > 5, with small core or without core), the inertia effect decreases the pressure magnitude, but in the contrary case (N < 1]Kon < 5 x 10” 2, with large core) the inertia effect increases the pressure magnitude.
