Abstract
In order to investigate the deposition characteristics of particles on the surface of plate, a simulating experiment was conducted at room temperature, in which the atomized wax was utilized as the particles and the test model was a flat plate. Six different types of film cooling hole specimens were selected for the experiment, including cylindrical, conical, CONSOLE, RTSH, Laidback fan-shaped, and fan-shaped film cooling holes. The deposition distribution and deposition amount variation on the surface of the different hole specimens were studied. The experimental results showed that the deposition distribution on the pressure surface was concentrated downstream of the film cooling holes. Compared with the cylindrical holes, the five types of air film cooling holes in this study could effectively reduce the deposition of particles on the surface of the flat plate. The deposition rate of the CONSOLE hole decreased by about 69%, and the deposition rate of the other hole types decreased by about 80%. But the cooling efficiency remained relatively constant before and after deposition. Further experiments with cylindrical specimens revealed that the deposition rate tends to increase as the cooling air temperature drops. Moreover, the lower the cooling air temperature, the more pronounced the change in cooling efficiency becomes between the pre- and post-deposition stages.
| Translated title of the contribution | An Experimental Simulation on the Influence of Different Film Cooling Hole Shapes on Particle Deposition on Plate Surface |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1975-1990 |
| Number of pages | 16 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 46 |
| Issue number | 6 |
| State | Published - Jun 2025 |