Loading...
Please wait, while we are loading the content...
Similar Documents
Two-equation turbulence models for prediction of heat transfer on a transonic turbine blade
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ameri, Ali A. Garg, Vijay K. |
| Copyright Year | 2001 |
| Description | Two versions of the two-equation k-omega model and a shear stress transport (SST) model are used in a three-dimensional, multi-block, Navier-Stokes code to compare the detailed heat transfer measurements on a transonic turbine blade. It is found that the SST model resolves the passage vortex better on the suction side of the blade, thus yielding a better comparison with the experimental data than either of the k-w models. However, the comparison is still deficient on the suction side of the blade. Use of the SST model does require the computation of distance from a wall, which for a multiblock grid, such as in the present case, can be complicated. However, a relatively easy fix for this problem was devised. Also addressed are issues such as (1) computation of the production term in the turbulence equations for aerodynamic applications, and (2) the relation between the computational and experimental values for the turbulence length scale, and its influence on the passage vortex on the suction side of the turbine blade. |
| File Size | 1061046 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010047410 |
| Archival Resource Key | ark:/13960/t7cs0rz35 |
| Language | English |
| Publisher Date | 2001-04-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Thermodynamics Navier-stokes Equation Stress Analysis Multiblock Grids Turbulent Flow Turbine Blades Computational Fluid Dynamics Supersonic Turbines Shear Stress K-omega Turbulence Model Mathematical Models Three Dimensional Models Heat Transfer Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
