Abstract
A finite difference scheme with third order precision and TVD property and a technique of multi-block grid are applied. Simulation of film-cooling on the suction surface of a turbine cascade with two staggered rows of coolant holes is performed based on the three-dimensional NS solver. The characteristics of film-cooling of the coolant from the two rows of coolant holes on blade suction surface are displayed as well as the coolant trajectory along downstream. The distribution discipline of film-cooling adiabatic effectiveness is analyzed under different blowing ratios and ejection angles. The result shows that the transportation of two rows of staggered coolants is complicated especially under large blowing ratio and angle, and the formation of film-cooling adiabatic effectiveness in the region between two rows of holes is distinctively different from that in the downstream of the second row.
| Original language | English |
|---|---|
| Pages (from-to) | 757-760 |
| Number of pages | 4 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 25 |
| Issue number | 5 |
| State | Published - Sep 2004 |
| Externally published | Yes |
Keywords
- Adiabatic effectiveness
- Coolant jet
- Film-cooling
- Multi-block
- Turbine
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