结合工程实例和CFD技术进行工程流体力学教学

Engineering Fluid Mechanics Teaching with Practical Engineering Examples and CFD Technology

摘要: 本文提出将CFD技术和工程实例分析融合在工程流体力学教学中，通过CFD技术对工程实例进行数值模拟，将其流场进行直观形象的展示，使抽象的理论知识变得形象具体，有利于学生理解并激发学习兴趣。对工程实例的流动分析囊括多个理论知识点，提高学生对理论知识的综合运用能力和创新思维。本文以一个旋流混合器为例，对其进行数值模拟并分析其内部流场，分析过程中运用了伯努利方程、总压、静压、流线和旋涡等多个工程流体力学知识点，将这些知识点进行融会贯通，加深了对理论知识的理解。因此，结合工程实例和CFD技术为工程流体力学课程提供了有利的教学手段，提升了传统多媒体加板书的教学模式，改善了以往的注入式教学效果，是值得探讨和尝试的教学方式。

Abstract: In this paper, the CFD technology and the analysis of a practical engineering example are combined in the teaching of engineering fluid mechanics. Through the numerical simulation of the practical engineering example, the flow field is visualized and the abstract theoretical knowledge becomes more vivid, which is beneficial to the students’ understanding and learning. The flow analysis of the engineering example includes many theoretical knowledge points and improves the students’ comprehensive ability and innovative thinking. A swirl mixer is taken as an example for numerical simulation and its internal flow field is analyzed. The analysis involves many theoretical points, such as Bernoulli equation, total pressure, static pressure, streamline and vortex, et al. So these knowledge points are digested and the understanding is deepened. Therefore, the engineering fluid mechanics teaching with practical engineering examples and CFD technology is a good teaching method, which enhances the traditional teaching mode with multimedia and black- board and improves the teaching effect compared with previous injection teaching, and is worthy of discussing and trying.