Abstract
The effect of area ratio, Coanda surface curvature, inlet condition and pressure coefficient on the ejection coefficient of the Coanda annular jet element is studied in this paper. The results of the study show that: A linear relationship between the ejection coefficient and the area ratio of the Coanda annular jet element; For a Coanda annular jet element with certain structure, the inlet conditions have little effect on the ejection coefficient; Increasing the Coanda surface curvature in a certain range can increase the ejection coefficient of the Coanda annular jet element; The mechanism of increasing ejection coefficient of Coanda annular jet element by Coanda effect is revealed; The increase of the pressure coefficient makes the coefficient of the internal reflux of the Coanda annular jet element reduced.
| Original language | English |
|---|---|
| Pages (from-to) | 2171-2177 |
| Number of pages | 7 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 39 |
| Issue number | 10 |
| State | Published - 1 Oct 2018 |
Keywords
- Area ratio
- Coanda annular jet element
- Coanda effect
- Ejection coefficient
- Pressure coefficient
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