In undergraduate engineering education, teaching hydraulic systems often relies on simplified models such as Bernoulli’s equation or the Darcy-Weisbach formulation. While these are essential for real-world design and analysis, they can obscure the underlying fluid dynamics, especially for phenomena such as turbulence or mixing. To enhance conceptual understanding and engagement, we have integrated a didactic Computational Fluid Dynamics (CFD) module into an Applied Hydraulics course, aimed at providing students with a visual and exploratory introduction to real fluid behavior.

The CFD module is not intended for full numerical resolution but rather for interactive, qualitative exploration. Students are given pre-computed cases using OpenFOAM (e.g., turbulent flow in a straight or branched pipe), developed with turbulence models such as RANS and LES. Through a guided interface, they are able to modify key variables (such as inlet flow rates, pipe geometry, or turbulence modeling approach) and immediately observe changes in velocity fields, turbulent structures, and the transport of chemical species such as chlorine. This hands-on manipulation helps students grasp complex flow behavior in an intuitive and visual way, bridging the gap between theoretical equations and real fluid dynamics.

Once students have explored these visualizations, the course reconnects with classical theory. They use simplified models to analyze full-scale water distribution systems with EPANET, a widely used tool for hydraulic network design. This transition allows them to critically evaluate the advantages and limitations of different modeling approaches, and to understand when and why each tool is appropriate in real engineering projects.

In addition to reinforcing technical knowledge and boosting motivation, this learning sequence offers an important professional orientation opportunity. By being exposed to both high-fidelity CFD simulations and practical network design software, students begin to recognize their own preferences and strengths: whether toward a more research-oriented or a more industry/project-focused career path.

This approach strengthens core learning outcomes, enhances student autonomy and intuition, and helps contextualize theoretical knowledge within real-world applications. Its modular structure makes it easily transferable to other STEM courses, and highly suitable for integrating advanced simulation tools and real-world engineering practice into undergraduate education.

Keywords: Education, engineering, fluid mechanics, CFD.