Analysis of an unsteady squeezing flow of dusty fluids

The paper considers a theoretical study of the effect on unsteady two-dimen sional flow of dusty fluids between two circular plates : one is fixed and the other is in unsteady motion. Using an iterative process, the effect of dust on viscous flow and on variable load capacity has been analysed. The v ariation of dust concentration due to unsteady motion is also studied. A co mparative study of existing results in the steady state with the present re sults in steady and unsteady states have been made. It is seen that the pre sence of dust in the flow of fluids not only increases thr pressure gradien t in the flow but also interacts on viscous behaviour of liquids in the flo w, specially in lubrication problems. The paper concludes with a discussion of the effect of vibration of unsteady plate in a squeeze-flow. (C) 2000 E lsevier Science Ltd. All rights reserved.