Direct numerical simulation of flows including dense solid particles

包含稠密固体颗粒的流动表现出复杂的行为，通过直接数值模拟对流动物理有深入的理解是非常必要的。体积力型浸入边界法具有计算简单、计算量小等优点，但作为一种数值方法，它也存在一些固有的问题。在本研究中，我们指出了问题的根源，并提出了一种替代方法。此外，直接数值模拟包括密集颗粒流进行详细调查其行为。

Flows including dense solid particles show complex behavior and deep understanding of flow physics by direct numerical simulations is highly required. Body-force-type immersed boundary method is attractive from its simplicity and low computational cost while it has intrinsic problems as a numerical method. In the present study, we specified the source of problems and an alternative method was proposed. In addition, direct numerical simulations of flows including denseparticles were performed to investigate its behavior in detail.