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GeezerVison is showing github.com — Update documentation for Solver Setup by suargi · Pull Request #81 · su2code/su2code.github.io Conversation
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| The DES constant can be controlledd by the field `DES_CONST`, with 0.65 as default. | ||
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| #### Menter’s k-omega SST Model #### | ||
| As initial conditions, the values of are initialized at all grid point with the farfield values. The farfield conditions for the turbulent kinetic energy $k$ is computed as: $k = \frac{3}{2}(UI)$, whereby $U$ is the freestream velocity magnitude and $I$ is the turbulence intensity. This latter value can be specified in the config file by the `FREESTREAM_TURBULENCEINTENSITY` field, with defaul value to 0.05 which corresponds to a $5\%$. The freestream value of the turbulent frequency $\omega$ is computed as: $\omega = \frac{\rho k}{\mu}(\frac{\mu_t}{\mu})^{-1}$, where $\rho$ and $\mu$ are the freestream density and laminar viscosity respectively and $\frac{\mu_t}{\mu}$ is the turbulent viscosity ratio, also known as freestream dissipation. Its value can be specified in the `FREESTREAM_TURB2LAMVISCRATIO` field, defaulting to $10$. |
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Would be nice if someone checks the boundary conditions for omega. I am not that familiar with the k-w model.
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| - `SST_OPTIONS`: | ||
| - `NONE`: No SST turbulence model (default). | ||
| - `V1994m`: refers to the "Standard" Menter SST model from 1994 with the modified constant $\sigma_{k1}$ and the redefinition of the turbulent eddy viscosity. | ||
| - `V2003m`: refers to the Menter SST model from 2003 ignoring the $\tau_{ij}$ in the momentum and energy equations and the production term is approximated by $P = \mu_t S^2$. | ||
| - `VORTICITY`: refers to the vorticity source term correction. | ||
| - `KATO_LAUNDER`: refers to the Kato-Launder correction. | ||
| - `UQ`: refers to the V1994m version with uncertainty quantification modifications.?? | ||
| - `SUSTAINING`: refers to the controlled decay correction. | ||
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| - `SA_OPTIONS`: | ||
| - `NONE`: refers to the modification where the $f_{t2}$ term is set to zero, i.e., $c_{t3} = 0$ (default). |
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This does not have to be repeated here... just point to the section in Physical definition.
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