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Heat transfer in a complex trailing edge passage for a high pressure turbine blade. part 2:; simulation results
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rigby, David L. Bunker, Ronald S. |
| Copyright Year | 2002 |
| Description | A combined experimental and numerical study to investigate the heat transfer distribution in a complex blade trailing edge passage was conducted. The geometry consists of a two pass serpentine passage with taper toward the trailing edge, as well as from hub to tip. The upflow channel has an average aspect ratio of roughly 14:1, while the exit passage aspect ratio is about 5:1. The upflow channel is split in an interrupted way and is smooth on the trailing edge side of the split and turbulated on the other side. A turning vane is placed near the tip of the upflow channel. Reynolds numbers in the range of 31,000 to 61,000, based on inlet conditions, were simulated numerically. The simulation was performed using the Glenn-HT code, a full three-dimensional Navier-Stokes solver using the Wilcox k-omega turbulence model. A structured multi-block grid is used with approximately 4.5 million cells and average y+ values on the order of unity. Pressure and heat transfer distributions are presented with comparison to the experimental data. While there are some regions with discrepancies, in general the agreement is very good for both pressure and heat transfer. |
| File Size | 1583723 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020083042 |
| Archival Resource Key | ark:/13960/t8vb33g77 |
| Language | English |
| Publisher Date | 2002-08-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Navier-stokes Equation Multiblock Grids Turbine Blades Three Dimensional Flow Reynolds Number Trailing Edges K-omega Turbulence Model Flow Characteristics Computerized Simulation Aspect Ratio Heat Transfer Coefficients High Pressure 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 |
