凝聚性沉滓水庫之排砂策略研究(Ⅲ)─子計畫一：水庫沈滓沈降行為之研究

Abstract

本研究主要針對黏性沉滓的沉降速度，提出三種不同的方法求解其沉降速度。三種方法均需現場資料，做為參數的率定。另外在單一圓球的三維沉降行為之研究在本研究中也提出一報告。包括單一顆粒自由沉降的阻力係數、螺旋運動、與其後尾流的三維流場顯影照片。This research proposed three different methods to estimate the velocity of cohesive sediment. All of the three methods need filed data to verification parameters used in the formula. In addition, behaviors of a 3-D single spherical particle were presented in this report. Drag coefficient 、spiral-motion behavior and visualization wake of a freely falling particle were also included