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Two-dimensional navier-stokes heat transfer analysis for rough turbine blades
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Civinskas, K. C. Boyle, R. J. |
| Copyright Year | 1991 |
| Description | A quasi-three-dimensional thin-layer Navier-Stokes analysis was used to predict heat transfer to rough surfaces. Comparisons are made between predicted and experimental heat transfer for turbine blades and flat plates of known roughness. The effect of surface roughness on heat transfer was modeled using a mixing length approach. The effect of near-wall grid spacing and convergence criteria on the accuracy of the heat transfer predictions are examined. An eddy viscosity mixing length model having an inner and outer layer was used. A discussion of the appropriate model for the crossover between the inner and outer layers is included. The analytic results are compared with experimental data for both flat plates and turbine blade geometries. Comparisons between predicted and experimental heat transfer showed that a modeling roughness effects using a modified mixing length approach results in good predictions of the trends in heat transfer due to roughness. |
| File Size | 736618 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940008554 |
| Archival Resource Key | ark:/13960/t4vj0fr4b |
| Language | English |
| Publisher Date | 1991-06-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Navier-stokes Equation Turbulent Heat Transfer Turbine Blades Flat Plates Turbulence Models Mixing Length Flow Theory Surface Roughness Computational Grids Eddy Viscosity Surface Roughness Effects Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
