CFD (Computational Fluid Dynamics)
Computational Fluid Dynamics (CFD) is the CAE technique for simulating the behavior of fluids and gases. CFD solves the Navier-Stokes equations and related conservation laws (mass, momentum, energy) on a discretized domain to predict pressure drops, heat transfer, flow patterns, turbulence, and mixing. CFD is used to optimize aerodynamics, design cooling systems, analyze HVAC flows, and predict the behavior of pumps, compressors, and fluid-based systems.
Why it matters
Fluid dynamics is notoriously hard to predict by hand. A component that works well in theory might have unexpected flow separation, recirculation zones, or heat transfer bottlenecks that only appear once it's tested. CFD lets you visualize those phenomena and iterate on the design digitally. It's essential for products where flow efficiency, cooling, or pressure drop are critical: aircraft wings, heat sinks, pumps, automotive intakes, and HVAC systems all depend on CFD-driven optimization.
External References
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Cite this definition
Finocchiaro, Michael. “CFD (Computational Fluid Dynamics).” DemystifyingPLM PLM Glossary, 2026, https://www.demystifyingplm.com/glossary/cfd-computational-fluid-dynamics