The turbulence kinetic energy equation is given by:
\[ \Ddt{k} = \div \left(D_k \grad k \right) + G - \epsilon \]
and the dissipation rate by:
\[ \Ddt{\epsilon} = \div \left( D_{\epsilon} \grad \epsilon \right) + C_1 G \frac{\epsilon}{k} - C_2 \frac{\epsilon^2}{k} \]
The turbulence generation, \( G \) is given by:
\[ G = \left[\nu_t \left( \grad \u + \left(\grad \u\right)^T \right) - \tensor{\tau}_{nl}\right] \colon \grad \u \]
where \( \tensor{\tau}_{nl} \) is the non-linear stress.
The model is specified using:
RAS { turbulence on; RASModel ShihQuadraticKE; }
Source code:
Reference:
Would you like to suggest an improvement to this page? | Create an issue |
Copyright © 2016 OpenCFD Ltd.