Settling velocities of particulate systems, 3. Power series expansion for the drag coefficient of a sphere and prediction of the settling velocity期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Settling velocities of particulate systems, 3. Power series expansion for the drag coefficient of a sphere and prediction of the settling velocity

Authors:	F Concha A Barrientos

Institution:	Departamento de Ingenieria Metalúrgíca, Facultad de Ingeniería, Universidad de Concepción, Casilla 53-C, Concepción Chile

Abstract:	The following equation has been previously developed for the drag coefficient of a sphere. $C_{D} = C_{0} 1 + (σ_{0} /Re^{12})]^{2}$ In this work the authors propose a power series expansion for C₀ in terms of the Reynolds number: $C_{0} = 0 284153 Σ α=0 n B_{α} Re^{α}$ A fifth-order polynomial permits obtaining the drag coefficient and the settling velocity of a sphere, up to a Reynolds number of 3 × 10⁵, with an average relative error of about 2%.

Keywords:
本文献已被 ScienceDirect 等数据库收录！