If you’re somewhat new to CFD, you might be asking yourself why there are so many turbulence models. The answer lies at the heart of what CFD software does. It solves the Navier-Stokes Equation as well as the energy and mass conservation. When solving these equations, Prandtl realized that no direct mathematical solution existed for turbulent flow. This has been coined as the turbulence closure problem because the equations can’t be closed for turbulent flow.
CFD
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