气体非均匀燃爆实验装置的研制及其教学应用

Development of experimental device for non-uniform gas explosion and its application in undergraduate teaching

为了提升"燃烧学"课程中气体非均匀燃爆相关知识点的教学效果,构建了甲烷泄漏非均匀分布及燃爆特性的本科教学实验装置,并将甲烷泄漏过程中的浓度梯度变化规律、在不同浓度梯度下甲烷燃爆火焰演化及超压特征等内容融入课程教学中。实践表明,应用该科研案例后的教学,使学生对相关知识点的掌握程度明显提升,锻炼了科研思维,提升了科研能力。

In order to improve the teaching effect of non-uniform gas explosion in "Combustion", an undergraduate teaching experimental device with non-uniform distribution of methane leakage and explosion characteristics is built. Through the experiment, the law of concentration gradient change during methane leakage, evolution of methane explosion flames and overpressure characteristics under different concentration gradients are applied to the course teaching. The practice shows that the application of the research case in teaching can significantly improve the students’ mastery of relevant knowledge points, exercise their scientific research thinking and enhance their scientific research ability.