On the implementation of open source CFD system to flow visualization in fluid mechanics

Abstract

In this contribution, we combine computational fluid dynamics (CFD) tools with particle image velocimetry (PIV) experiments, to supplement the traditional teaching method. The objective is to provide a well-rounded experience for engineering students to learn and apply fluid mechanics concepts in the design of physical systems. In this approach, the integration of theory, experimental analysis, and mathematical/numerical models of engineering systems is done through an open-source CFD software named OpenFOAM. This numerical software, which is grounded on the finite-volume technique, is to be linked to an educational interactive flow visualization system (i.e., FlowCOACH), currently used to provide students with opportunities for visual appreciation of the flow phenomena. A main advantage of using OpenFOAM is that building the geometry and setting the boundary and initial conditions for the model is straightforward. The problem of flow around a squared obstruction, inside a channel, is used to assess the accuracy of the numerical solution obtained from OpenFOAM. Comparison of the results against a well-known commercial CFD software indicate that OpenFOAM is a reliable numerical tool that can be used to teach students the topic of fluid mechanics. © 2012 American Society for Engineering Education.