摘要
叙述了适用于粘弹性流体混合层流场的实验装置的设计和研制.采用二维激光多普勒系统对混合层流场进行了测量,得到了平均速度剖面、动量厚度、湍流脉动强度、雷诺应力等一些流场的基本特征量.结果表明,混合层中加入聚合物后流场将有较大的变化,同时也说明本文所研制的实验装置满足实验的要求.
An experimental apparatus for researching the mixing layer of viscoelastic liquids is designed and built. Some flow characteristics, such as mean velocity, momentum thickness,turbulent intensity and Reynolds’stresses, are measured by using a 2D LDA system. The results show that the development of mixing layer is strongly influenced by polymer additives.
出处
《实验力学》
CSCD
北大核心
1998年第4期520-525,共6页
Journal of Experimental Mechanics
基金
国家自然科学基金
关键词
聚合物添加剂
混合层流场
实验研究
LDA测量
polymer additives, mixing layer, experimental research, measurement of LDA