Effect of air core on the shape and discharge of the outflow through a bottom outlet
Effect of air core on the shape and discharge of the outflow through a bottom outlet作者机构：Department of Civil Engineering Zhejiang University Department of Civil and Environmental Engineering University of Alberta
出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)
年 卷 期：2013年第3卷第2期
页 面：72-76页
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
主 题：air core discharge outflow shape spray vortex
摘 要：Experiments were conducted to study the generation of air core and its effect on the outflow shape and discharge in a cylindrical water tank with a bottom well-designed outlet. Depending on the stages of the air core in the tank, the outflow shape can vary from a smooth water jet to a smooth spindle shape with air-core, and to water sprays. The diameter of the nozzle size also has influence on the outflow pattern. The existence of the penetrated air core can dramatically reduce the outflow discharge, with the discharge coefficient decreasing with the nozzle diameter.
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