Properties🔗
- incompressible only
- three-equation model
- low Reynolds number
- transition modelling
Model equations🔗
Specific dissipation rate equation:
\[\Ddt{\omega} = \div \left(D_\omega \grad \omega\right) + C_{w1} P_{kt} \frac{\omega}{k_t} - \left(1.0 - \frac{C_{wR}}{f_w} \right) k_l \left(R_{bp} + R_{nat}\right) \frac{\omega}{k_t} - C_{w2} f_w^2 \omega^2 + C_{w3} f_\omega \alpha_t f_w^2 \frac{k_t^{0.5}}{y^3}\]Laminar kinetic energy equation:
\[\Ddt{k_l} = \div \left( \nu \grad k_l \right) + P_{kl} - R_{bp} + R_{nat} + D_l\]Turbulent kinetic energy equation:
\[\Ddt{k_t} = \div \left(D_k \grad k_t\right) + P_{kt} + \left(R_{bp} + R_{nat}\right) k_l - \omega + D_t\]Default model coefficients🔗
Usage🔗
The model is specified using:
RAS
{
turbulence on;
RASModel kkLOmega;
}
Further information🔗
Source code:
References: