ON INTERACTION BETWEEN FALLING BODIES AND THE SURROUNDING FLUID
ON INTERACTION BETWEEN FALLING BODIES AND THE SURROUNDING FLUID
复制标题
DOI：
10.1112/s0025579309000473
复制
发表时间：
2010-01-01
期刊：
影响因子：
0.8
通讯作者：
Ellis, Andrew S.
中科院分区：
文献类型：
--
作者：
Smith, Frank T.;Ellis, Andrew S.
有限数量的机构和周围的流体之间的相互作用，在一个通道，例如，从理论上研究。在平面模型中，物体或模型化颗粒是在准无粘性流体内以几乎平行的形式自由移动的薄固体。调查涉及数字和分析研究和比较。出现的三个主要特征是关于匀速运动状态的线性不稳定性，当非线性相互作用发生作用时，在有限标度时间内物体（或具有侧壁的物体）的碰撞，以及对许多物体的情况下保持的物体-流体相互作用的连续极限描述。
Interactions between a finite number of bodies and the surrounding fluid, in a channel for instance, are investigated theoretically. In the planar model here the bodies or modelled grains are thin solid bodies free to move in a nearly parallel formation within a quasi-inviscid fluid. The investigation involves numerical and analytical studies and comparisons. The three main features that appear are a linear instability about a state of uniform motion, a clashing of the bodies (or of a body with a side wall) within a finite scaled time when nonlinear interaction takes effect, and a continuum-limit description of the body-fluid interaction holding for the case of many bodies.