AN INVESTIGATION OF FLOW CHARACTERISTIC OF AERATED DRAG REDUCTION IN TUBE

作     者：Dai Guang qing, Yang Qing State Key Hydraulics Laboratory of High Speed Flows, Sichuan University, Chengdu 610065, ChinaZhang Rong Net Education Institute, Sichuan University, Chengdu 610065, China 

作者机构：Hydraulics Lab. of High Speed Flows Sichuan Univ. Chengdu 610065 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2002年第14卷第3期

页      面：102-105页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：tube turbulent flow aeration drag reduction 

摘      要：Under the aerated conditions of wall and top in tube, the turbulent flow in the tube was measured by using LDA. The turbulent structure of the flow field and the mechanism of aerating drag reduction in the tube were discussed. It is shown that the energy dissipations of turbulence flow and mean flow will reduce and the flow velocity (or flow rate) will increase by injecting mini bubbles to the wall or top of tube, namely the effect of aerating drag reduction is attained.