基础实验试题A-1:水钟计时  

Fundamental test A-1:Timekeeping of water clock

作　　者：王槿[1,2] 文小青[1,2] 李文华 惠王伟[1,2] 孔勇发[1,2] WANG Jin;WEN Xiao-qing;LI Wen-hua;HUI Wang-wei;KONG Yong-fa(School of Physics,Nankai University,Tianjin 300071,China;National Demonstration Center for Experimental Physics Education,Nankai University,Tianjin 300071,China)

机构地区：[1]南开大学物理科学学院,天津300071 [2]南开大学基础物理国家级实验教学示范中心,天津300071

出　　处：《物理实验》2022年第2期29-33,47,共6页Physics Experimentation

基　　金：2020高等学校教学研究项目(No.DJZW202010hb);国家基础科学人才培养基金项目(No.J1210027);南开大学物理基地能力提高项目(No.J1103208);教育部基础学科拔尖学生培养试验计划。

摘　　要：介绍了第7届全国大学生物理实验竞赛基础实验试题A“流体的流动”第一部分“水钟计时”的实验内容,并给出了参考解答以及竞赛结果分析.通过阅读材料,学生了解基于质量守恒和能量守恒的伯努利方程,利用简单的居家实验器材自组实验装置,探究水钟计时现象.试题考查了学生对水钟计时的理论、随机误差、精度及准确度、表面张力、雷诺数和层流状态等的掌握情况,以及从简单的生活现象发现物理问题及解决问题的能力.The test questions,solutions and result analysis of the fundamental test A-l of the 7th Chinese Undergraduate Physics Experiment Competition,water clock timing were introduced.Students came to have the knowledge of the Bernoulli’s equation based on the mass conservation and energy conservation by reading materials?and constructed the experimental setup using the simple house materials and investigated water clock timing.The test focused at the studentsJ understanding of the theoretical analysis,random error,precision and accuracy,surface tension,Reynolds number and the laminar conditions of liquid individually.What's more,the students'ability to discover physical problems and solve problems from the normal life phenomenon was inspected.

关 键 词：流体力学 伯努利原理 表面张力 雷诺数 

分 类 号：O351[理学—流体力学]