The fluid machinery course is the core course of energy and power engineering majors.It focuses on the internal flow and performance characteristics of fluid machinery.It is necessary for students to effectively understand relevant theories through experiments.Cavitation is a difficult issue in the curriculum,related experiments are difficult to achieve visualization of flow,and visualization materials are prone to damage under negative pressure conditions,which restricts the development of experimental teaching.This article proposes to use the open-source CFD program OpenFOAM to construct a trinity teaching model that integrates theoretical teaching,OpenFOAM teaching,and OpenFOAM simulation.It takes the cavitation experiment as a case and uses the open-source CFD program OpenFOAM to simulate the development of cavitation,revealing the unstable characteristics of cavitation and its relationship with outlet pressure.The results indicate that the new teaching model compensates for the shortcomings of traditional experimental teaching and enhances students'analytical and exploratory abilities.
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