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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Vijay, K. Garg Raymond, E. Gaugler |
| Copyright Year | 1995 |
| Abstract | An existing three-dimensional Navier-Stokes code (Arnone et al., 1991), modified to include film cooling considerations (Garg and Gaugler, 1994), has been used to study the effect of coolant velocity and temperature distribution at the hole exit on the heat transfer coefficient on three film-cooled turbine blades, namely, the C3X vane, the VKI rotor, and the ACE rotor. Results are also compared with the experimental data for all the blades. Moreover, Mayle’s transition criterion (Mayle, 1991), Forest’s model for augmentation of leading edge heat transfer due to free-stream turbulence (Forest, 1977), and Crawford’s model for augmentation of eddy viscosity due to film cooling (Crawford et al., 1980) are used. Use of Mayle’s and Forest’s models is relevant only for the ACE rotor due to the absence of shower-head cooling on this rotor. It is found that, in some cases, the effect of distribution of coolant velocity and temperature at the hole exit can be as much as 60% on the heat transfer coefficient at the blade suction surface, and 50% at the pressure surface. Also, different effects are observed on the pressure and suction surface depending upon the blade as well as upon the hole shape, conical or cylindrical. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791878811 |
| DOI | 10.1115/95-GT-002 |
| Volume Number | Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration |
| Conference Proceedings | ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition |
| Language | English |
| Publisher Date | 1995-06-05 |
| Publisher Place | Houston, Texas, USA |
| Access Restriction | Open |
| Subject Keyword | Suction Viscosity Temperature distribution Temperature Turbulence Turbine blades Cooling Blades Rotors Pressure Eddies (fluid dynamics) Coolants Film cooling Shapes Heat transfer coefficients Heat transfer |
| Content Type | Text |
| Resource Type | Article |
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