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Channel flow modeling of impingement cooling of a rotating turbine blade
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Koo, J. J. |
| Copyright Year | 1984 |
| Description | Local heat transfer distributions in impingement cooling have been measured by Kreatsoulas and Prieser for a range of conditions which model those in actual turbine blades, including the effects of rotation. These data were reported as local Nusselt numbers, but referred to coolant supply conditions. By means of a channel flow modeling of the flow in the supply and impingement passages, the same data are here presented in terms of local Nusselt number distributions such as are used in design. The results in this form are compared to the nonrotating impingement results of Chupp and to the rotating but nonimpingement results of Morris. Rotation reduces the mean Nusselt numbers from these found by Chupp by about 30 percent, and introduces important radial variations which are sensitive to rotation and to leading edge stagger angle. |
| File Size | 7671728 |
| Page Count | 85 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860017813 |
| Archival Resource Key | ark:/13960/t3c011d9j |
| Language | English |
| Publisher Date | 1984-12-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Convective Heat Transfer Nusselt Number Cooling Turbine Blades Buoyancy Airfoils Rotation Pressure Gradients Coefficient of Friction Jet Impingement Channel Flow Heat Transfer Coefficients Leading Edges Coriolis Effect 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 |
