含聚合物流体的紊动结构  

The Turbulent Structure of a Viscoelastic fluid by dilute Solution of Linear Macromolecules

作　　者：王国兵[1] 

机构地区：[1]南京水利科学研究院,南京210024

出　　处：《水动力学研究与进展（A辑）》1994年第6期703-709,共7页Chinese Journal of Hydrodynamics

摘　　要：在牛顿流体中加入少量高分子聚合物后,流体转变为粘弹性流体。文中分析了这种粘弹性流体在层流向紊流过渡状态下的脉动结构,应用窦国仁紊流随机理论,得出了层流、层流向紊流过程和紊流各流动状态下的时均流速和脉动强度的统一计算公式。这些公式得到了试验资料的详细验证,公式与试验数据吻合良好。Combined with the stochastic theory of turbulence put by Dou Guoren, the paper analyzes turbulence structure of the fluid in the state of linear flow, the interim state from linear flow to turbulent flow and the state of turbulent flow, and gets the united formulas of mean velocity and intensity of turbulent velocity. The theoretical formulas arc identified by the experiment results , and the formulas are good with the experiment data.

关 键 词：聚合物 粘弹性流体 粘性流体力学 湍流 

分 类 号：O357.5[理学—流体力学]