Computational Fluid Dynamics (CFD)

Computational Fluid Dynamics (CFD) is the logical capability of numerically solving the Navier–Stokes equations (and their turbulence-averaged variants) on a discretized fluid domain to predict flow, pressure, temperature, and species transport. It powers aerodynamic, thermal-management, HVAC, electronics-cooling, and process-equipment design.

What it covers

• External aerodynamics (vehicle drag, lift, downforce).
• Internal flow and heat transfer (engines, electronics cooling, HVAC).
• Multiphase and reacting flows (sprays, combustion, mixing).
• Conjugate heat transfer coupling fluid and solid temperature fields.
• Turbulence modeling spanning RANS, LES, and DNS approaches.

Relationships (see sidebar)

• Supports the CAE Analysis process.
• Implemented by systems like Siemens NX (Simcenter STAR-CCM+ / FLOEFD) and Dassault 3DEXPERIENCE (Simulia/PowerFLOW).
• Often coupled with FEA for thermo-structural and fluid-structure interaction problems.