Modeling the fluid dynamics and heat transfer in unsteady and periodic flow of a highly concentrated granular medium over an obstacle in a channel

A. V. Shvab, N. A. Chinchikeeva

National Research Tomsk State University, Tomsk, 634050, Russia

Abstract: The unsteady isothermal flow of a dense layer of a granular medium around an obstacle in a plane channel is modeled using the momentum transfer equations for an incompressible viscous liquid medium based on the slip of the medium at the walls. The validity of this approach is tested by comparing the calculated and experimental data for the flow of a highly concentrated granular medium with high flowability. The effect of periodic change in the flow rate of the granular medium over time in the inlet section of the plane channel on the unsteady distributions of the velocity and temperature fields is studied.

Keywords: unsteady flow, granular medium, slip, friction, heat exchange.

UDC: 532.517.4

Received: 24.04.2014
Revised: 22.09.2015

DOI: 10.15372/PMTF20150620

 English version: Journal of Applied Mechanics and Technical Physics, 2015, 56:6, 1096–1102

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