Parametric Study of the Swirler/Venturi Spray Injectors
| Autor: | Robert Tacina, Ming Chia Lai, Hoisan Kim, Kyoung-Su Im |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Journal of Propulsion and Power. 17:717-727 |
| ISSN: | 1533-3876 0748-4658 |
| DOI: | 10.2514/2.5801 |
| Popis: | An experimental parametric study is carried out to characterize the spray from swirler/venturi injectors (SVIs) insidea steady-e owpressurechamber. In this study,venturi tubeswith diffuseranglesof 20, 40, 60, and 80 deg and different throat lengths are combined with different swirlers with vane angles of 30, 45, and 60 deg to investigate their combined effect on spray structure. The ambient pressure conditions inside the chamber were varied from 0.1 to 0.4 MPa to simulate the relevant gas turbine density and momentum condition. For simplicity, water is used to present liquid fuel. Focusing on the spray atomization and dispersion aspects, laser diagnostic techniques are used to characterize the isothermal spray structure, including phase Doppler particle analyzer and copper-vapor laser-sheet visualization. Pressure drop across the SVI is also measured. It was found that the pressure drop and droplet size are dominated by the throat velocity, but are modie ed signie cantly by the divergent angle, throat length, and swirler. It is also shown that matching the correct swirler with the venturi geometry is important to obtain optimal liquid atomization and droplet distribution. |
| Databáze: | OpenAIRE |
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