Turbulent transition simulation using the \(k\)-\(\omega\) model. (English) Zbl 0912.76066
Summary: We describe a novel approach in simulating laminar-to-turbulent transition by using two-equation models. The total stresses limitation concept is used to make the two-equation model capable of predicting high-Reynolds-number transitional flow. In order to handle the transition triggered by laminar separation at a low Reynolds number location, which commonly occurs in high speed flow, we introduce a sensor to detect separation and trigger transition in the separated zone. Test cases include the classical flat-plate turbulent boundary flow, and low-pressure turbine cascade flows under design and off-design conditions.
MSC:
| 76M25 | Other numerical methods (fluid mechanics) (MSC2010) |
| 76F10 | Shear flows and turbulence |
| 76N10 | Existence, uniqueness, and regularity theory for compressible fluids and gas dynamics |
Keywords:
Navier-Stokes equations; two-equation models; total stresses limitation concept; high-Reynolds-number transitional flow; liminar separation; sensor; flat-plate turbulent boundary flow; low-pressure turbine cascade flowsReferences:
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