Bryan D Wright

TL;DR: In this article, a rolling friction model is proposed to avoid arbitrary treatments or unnecessary assumptions, and its validity is confirmed by the good agreement between the simulated and experimental results under comparable conditions, which suggest that the angle of repose increases significantly with the rolling friction coefficient and decreases with particle size.

TL;DR: In this article, a numerical study of solid flow in a model blast furnace under simplified conditions by means of discrete particle simulation (DPS) is presented, and the applicability of the proposed DPS approach is validated from its good agreement with the experimental results in terms of the solid flow patterns.

TL;DR: The results demonstrate that the DPS–CFD approach can generate the stagnant zone without global assumptions or arbitrary treatments, and confirms that increasing gas flow rate can increase the size of the stagnant Zone, and in particular changes the solid flow pattern in the furnace shaft.

TL;DR: In this paper, a model to describe the solids flow under blast furnace conditions with countercurrent gas flow is developed on the basis of fluid mechanics and the principles of solid mechanics, where the surface stress resulting from the interaction among flowing particles is considered to be composed of two parts: rate-dependent and rate-independent.

TL;DR: In this article, the authors presented a numerical study of the gas-solid flow in an iron-making blast furnace by combining discrete particle simulation (DPS) with computational fluid dynamics (CFD).