Multi-scale modelling of reactive particulate flows

颗粒流是许多环境流和人为过程的一部分。在自然界中，陆地滑坡、河流中的沉积物输送、火山爆发产生的火山碎屑流是许多类型的颗粒流的几个例子。在能源行业，催化裂化、木材气化、水力压裂和固体颗粒太阳能接收器是经典应用，掌握颗粒流是工艺整体效率的关键因素。这类多相流的动力学的正确理解仍然是不完整的，在分散的固相和连续的周围流体之间的复杂的，往往占主导地位的动量，热量和质量传递。由于流动的复杂性，在理解颗粒流方面取得重大进展对研究科学家和工程师构成了巨大的挑战。

Particulate flows are part of many environmental flows as well as man-made processes. In nature, land slides, sediment transport in rivers, pyroclastic flows from volcanic eruptions are a few examples of many types of particulate flows. In the energy industry, catalytic cracking, wood gasification, hydraulic fracturing and solid particle solar receiver are classical applications where mastering the particulate flow is a key factor in the overall efficiency of the process. A proper understanding of the dynamics of this class of multiphase flows is still incomplete in relation to the intricate, and frequently dominant, momentum, heat and mass transfer between the dispersed solid phase and the continuous surrounding fluid. Due to the flow complexity, making significant advances in the comprehension of particulate flows constitutes a great challenge for research scientists and engineers.