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On explicit algebraic stress models for complex turbulent flows
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gatski, T. B. Speziale, C. G. |
| Copyright Year | 1992 |
| Description | Explicit algebraic stress models that are valid for three-dimensional turbulent flows in noninertial frames are systematically derived from a hierarchy of second-order closure models. This represents a generalization of the model derived by Pope who based his analysis on the Launder, Reece, and Rodi model restricted to two-dimensional turbulent flows in an inertial frame. The relationship between the new models and traditional algebraic stress models -- as well as anistropic eddy visosity models -- is theoretically established. The need for regularization is demonstrated in an effort to explain why traditional algebraic stress models have failed in complex flows. It is also shown that these explicit algebraic stress models can shed new light on what second-order closure models predict for the equilibrium states of homogeneous turbulent flows and can serve as a useful alternative in practical computations. |
| File Size | 1244146 |
| Page Count | 38 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930006292 |
| Archival Resource Key | ark:/13960/t56f0rv76 |
| Language | English |
| Publisher Date | 1992-11-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Stress Analysis Turbulent Flow Three Dimensional Flow Eddy Viscosity Prediction Analysis Techniques Turbulence Models Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
