| Spalart-Allmaras |
The calculation amount is small, and the effect is better for some complicated boundary layer problems. The calculation results have not been extensively tested and lack sub-models. |
| Standard k-ε |
Many applications, moderate computation, more data accumulation, and considerable accuracy. The simulation results of complex flows with large curvature, strong pressure gradient, and rotation problems are insufficient. |
| RNG k-ε |
It can simulate the jet impingement, separation flow, secondary flow, cyclone, and other medium complex flows. It is restricted by the assumption that the eddy viscosity is isotropic. |
| Realizable k-ε |
Basically the same as RNG k-ε, it can also better simulate the circular hole jet problem. It is restricted by the assumption that the eddy viscosity is isotropic |
| Standard k-ω |
For the wall boundary layer, free shear flow, low Reynolds coefficient performance is better. It is suitable for boundary layer flow and separation and rotation in the presence of a backpressure gradient. |
| SST k-ω |
Basically the same as the standard k-ω. It is not suitable for free shear flow because of the muscular wall distance dependence. |
| Reynolds Stress |
It is suitable for curved pipe, rotation, swirl combustion, cyclone separation, and other flows. It takes more CPU time and memory and is difficult to converge |
