Abstract
An algebraic eddy viscosity model, as well as a differential two equation k-ε model based on the Renormalization Group Theory of turbulence are proposed for closure of the compressible Reynolds averaged equations. The first model, although free from uncertainties related to the determination of modeling constants, still requires the specification of a length-scale which leads to a reduction of the generality of the model. The second model proposed is far more general. Not only does it remove the need for the determination of a length scale, but it also incorporates the low Reynolds number modeling in a form that does not depend directly on information about the wall location. This feature makes the RNG-based K-ε model suitable for calculation on unstructured meshes. The applicability of the RNG based turbulence transport approximations for mildly compressible flows is demonstrated by the successful simulation of several transonic flows.
Original language | English (US) |
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State | Published - 1989 |
Externally published | Yes |
Event | 9th Computational Fluid Dynamics Conference, 1989 - Buffalo, United States Duration: Jun 13 1989 → Jun 15 1989 |
Other
Other | 9th Computational Fluid Dynamics Conference, 1989 |
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Country/Territory | United States |
City | Buffalo |
Period | 6/13/89 → 6/15/89 |
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Fluid Flow and Transfer Processes