激流促紊输沙构想的机理探讨与实施刍议

Mechanism underlying the Conception "Promotion of Turbulence and Sediment Transportation Capacity by Oscillating Jet" and Its Implementation

本文首先从流体力学基本方程出发,分析了振荡脉冲射流对流体的热交换与质交换能力的促进作用。然后以数学解析手段证明了多相流体对固态粒子提供的悬浮功存在极值点。从而阐释大自然中发生的“黄河揭河底”与“大西洋浊流”等奇迹的内在机理。基于此,提出利用自然规律,以脉冲射流调控河流涡漩输沙减淤的构想,并对技术方案做初步原则讨论。

The promotion effect of fluidic oscillating jet on heat transfer and mass transfer has been analysed from the point of View of fundamental equations of fluid mechanics, at beginning of the paper. The existence of extremum of buoyant work in multi-phase fluid has been proved analytically, so as to explain the physical cause of occurrence of some miracles in the nature, as 'digging bed on Yellow River ' and 'Turbidety in Atlantic Oceaa'.Then, A Conception of modulation of flow energy of river by means of oscillating jet, is proposed, aimimg at promotion of transporting capacity of sediment and reduction of deposition of silt in reservior and irrigation canal.