关于流体力学黏滞及伯努利方程演示实验  

DEMONSTRATION EXPERIMENTS ONFLUID DYNAMICS VISCOSITY AND BERNOULLI EQUATION

作　　者：路峻岭[1] 顾晨[1] 秦联华[1] 任乃敬 马泊一 LU Junling;GU Chen;QIN Lianhua;REN Najing;MA Boyi(Department of Physics,Tsinghua University,Beijing 100084)

机构地区：[1]清华大学物理系,北京100084

出　　处：《物理与工程》2020年第1期80-86,92,共8页Physics and Engineering

摘　　要：对流体力学演示实验的相关问题进行了分析,指出了理想流体概念的局限性,并深入研究了黏滞及伯努利方程两个演示实验,给出了黏滞演示实验的定量结果;指出伯努利方程演示实验的对象是中心细流管;同时,提出了消除黏滞影响的具体改进方案。This paper analyses the problems related to the demonstration experiments of fluid mechanics.We point out the limitation of the concept of ideal fluid,study the two demonstration experiments of viscous and Bernoulli equations,and give the quantitative results of the demonstration experiment of viscous.It is concluded that the object of the demonstration experiment of Bernoulli equation is the central thin-flow tube.The specific improvement scheme for eliminating viscous effect is given.

关 键 词：流体 定常流动 流管 黏滞 伯努利方程 

分 类 号：O35[理学—流体力学]