摘要
粗糙裂隙渗流具有显著的非线性特征,常规裂隙渗流实验无法获取内部流场信息,学生无法直观感受裂隙内的流动特征。为加深学生对局部微流场测量的理解,加强专业理论与实验技能教学的结合,设计了以流体力学理论知识为基础、微观粒子图像测速(Micro-PIV)技术为测量方法的粗糙裂隙局部流场可视化实验教学方案。建立以N-S方程组为中心的知识体系,通过量纲分析的方法讲解公式的物理意义、推导与应用。基于可视化实验平台,测量粗糙裂隙局部流场特征,与理论知识结合进行分析,可增强学生对流体力学知识的理解,激发学生的主观能动性,提高学生的动手实验能力与科研创新素养。
The seepage of rough fracture has remarkable nonlinear characteristics,the information of internal flow field can not be obtained by conventional fracture seepage experiment,and the students cannot feel the flow characteristics directly.In order to deepen students’understanding of micro-flow field measurement and strengthen the combination of professional theory and experimental skills teaching,a visual experimental teaching scheme of rough fracture flow field is designed based on the theoretical knowledge of fluid mechanics and measured by Micro-PIV technology.First of all,a knowledge system centered on N-S equations is established,and the physical meaning,derivation and application of the formula are explained by the method of dimensional analysis.Then,based on the visual experimental platform,the characteristics of rough fracture flow field are measured and analyzed by combining theoretical knowledge to enhance students’understanding of fluid mechanics knowledge,stimulate students’subjective initiative,and improve students’hands-on experimental ability and the level of scientific research and innovation.
作者
郭平业
王蒙
刘世童
高恺
GUO Pingye;WANG Meng;LIU Shitong;GAO Kai(State Key Laboratory for GeoMechanics and Deep Underground Engineering;School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)
出处
《实验室研究与探索》
CAS
北大核心
2021年第5期170-173,201,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(NSFC:41941018)
中国矿业大学(北京)教改项目(J200711)。
关键词
裂隙渗流
微观粒子图像测速技术
可视化
实验教学
fracture seepage
microscopic partide image velocimetry(Micro-PIV)
visualization
experimental teaching
