A vast majority of industrial flows are turbulent. While conditions at boundaries may be steady, shear action near walls and other velocity profiles lead to time-dependent pressure and velocity fluctuations transported by and affecting the mean path of the fluid. These “turbulent” fluctuations span a wide range of length and timescales. As a result, computational demands for exact solutions of industrial turbulent flows far exceed available computing resources.

In Discovery, the k-omega SST turbulence model is appropriate for most cases and is the default for both time-dependent and steady-state simulations. Additional turbulence models are available and can be modified based on your simulation requirements. Refer the attached document to learn more about them.