Suspension of dust particles over a stretchable rotating disk and two-phase heat transfer

Studied in the present paper is the phenomenon of interaction of suspended particles with the fluid over a stretchable rotating disk. The physical insights into the resulting flow behavior and heat transfer rate of two phase equilibrium are the main targets. How the stretching contributes to the dusty flow character will be clarified. Governing equations of motion and energy are first transformed into similarity systems representing the fluid and dust stages. In the absence of dust particles, the whole system collapses onto the well-known von Karman rotating disk subject to a wall deformation in the radial direction. Numerical simulations are next performed to resolve the fluid and dust phases and their thermal responses to the interaction. The local wall shears, the wall slippage of the colloids, the far-field behaviors, and the heat transfer rates of both fluid and dust particles are eventually investigated graphically and tabularly in detail with physical insights. (C) 2020 Elsevier Ltd. All rights reserved.