雷诺实验装置的改进及教学创新探索
Improvement of Reynolds Experimental Equipment and Exploration of Teaching Innovation
王江河 1石开仪 1孟方友1
作者信息
- 1. 黔南民族师范学院化学化工学院,贵州都匀 558000
- 折叠
摘要
针对传统雷诺实验装置存在的高位水槽不稳定、流速测定不准、测定因素单一等不足,文章从三个方面提出改进措施.一是增加带孔隔板、三脚挡板,提高高位水槽的稳定性;二是增加不同管径的雷诺管,直观地观测管径大小对雷诺数的影响;三是增设示踪剂插入针头位置控制装置,优化示踪剂针头插入位置,使观测点的速度接近转子流量计测得的平均流速.在实验过程中,学生可以通过调节温度来改变流体黏度和密度,从而达到多维度探索雷诺数影响因素的目的,同时加深对管路流体流速分布和阻力损失的理解.
Abstract
Aiming at the deficiencies of unstable high-level water tank,inaccurate flow rate measurement,and limited measurement factors in the traditional Reynolds experimental device,this article proposes measures of improving the experimental device from three aspects.Firstly,the stability of the high-level water tank is improved by adding perforated partitions and three foot baffles;secondly,the influence of pipe diameter on Renolds number is intuitively observed by adding Reynolds tubes with different diameters;thirdly,a tracer insertion needle position control device is added to optimize the tracer needle insertion position,so the speed of the observation point can be closer to the average flow rate measured by the rotameter.In the process of carrying out this experiment,students can achieve the goal of exploring multi-dimensional influence on Renolds number by changing fluid viscosity and density through temperature regulation,and their understanding of pipeline velocity distribution and resistance loss can be deepened.
关键词
雷诺实验改进/示踪剂/雷诺数Key words
Improvement of Reynolds experiment/Tracer/Reynolds number引用本文复制引用
基金项目
贵州省高等学校教学内容和课程体系改革项目(2022SG014)
黔南民族师范学院"一流课程"建设项目()
贵州省高等学校工程研究中心(黔教技[2023]046)
出版年
2024
NETL
NSTL
万方数据