海洋工程环境流体绕流虚拟仿真实验项目建设及教学

Construction and Teaching of the Virtual Simulation Experiment Project for Fluid Flow around Ocean Engineering Environment

  • 摘要: 利用三维建模和渲染技术构建海洋工程环境流体绕流虚拟仿真实验系统并进行实践教学,旨在通过实验教学提升学生理论联系实际能力和创新源动力。实验系统设置认知学习模块、在线测试环节、流体绕流演示实验和定量研究实验模块。基于粒子图像测速(PIV)技术在精密实验玻璃水槽开展圆柱绕流原型实验,基于大尺度粒子图像测速(LSPIV)技术在嘉绍大桥现场开展桥墩绕流原型实验,并将实验操作过程和实测数据嵌入实验系统,使学生在仿真实验中掌握绕流理论和实操技能,构成层次递进的教学内容。采用“教、练、考、用”4个阶段逐步教学方法以及多维考核方式,调动学生实验的积极性,培养严谨求实的实验态度,促进从理论知识到实践应用的有效迁移,实现了以实践创新能力培养为中心任务的教学目标。

     

    Abstract: Using the three-dimensional modeling and rendering technology, a virtual simulation experiment system for fluid flow around marine engineering environments is built and used for the practical teaching, which aims to enhance students’ ability to connect theory with practice and stimulate their innovative thinking through experimental teaching. The experimental system includes modules for cognitive learning, online test, fluid flow demonstration experiment, cylinder flow experiment, and bridge pier flow experiment. Based on the particle image velocity measurement (PIV) technology, a prototype experiment of flow around a circular cylinder is finished in the precision experimental hydraulic flume, and a prototype experiment of flow around a circular pier of Jiashao Bridge is finished based on the large-scale particle image velocity measurement (LSPIV) technology. Then the project embeds the experimental operation process and measured data into the experimental system, so that students can master the theory of flow around and practical operation skills in the simulation. These experiments constitute progressively organized teaching contents. The teaching method follows a stepwise four stages, namely, teaching, practice, assessment, and application, and incorporates multidimensional assessment methods to motivate students’ enthusiasm for experimentation, cultivate a rigorous and practical experimental attitude, facilitate the effective transfer of theoretical knowledge to practical application, and achieve the teaching goal of fostering practical innovation capabilities as the central task.

     

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